Number

1,490

1,490 is a composite number, even, a calendar year.

1,490 (one thousand four hundred ninety) is an even 4-digit number. It is a composite number with 8 divisors, and factors as 2 × 5 × 149. Written other ways, in Roman numerals it is MCDXC and in binary, 10111010010.

Cube-Free Deficient Number Evil Number Gapful Number Recamán's Sequence Sphenic Number Squarefree Tetranacci Number Year

Interestingness

★ ★ ★ ★ ☆

6 notable facts · grade B

1,478 1,479 1,480 1,481 1,482 1,483 1,484 1,485 1,486 1,487 1,488 1,489 1,490 1,491 1,492 1,493 1,494 1,495 1,496 1,497 1,498 1,499 1,500 1,501 1,502

less more

Historical context — 1490 AD

Calendar year

Year 1490 (MCDXC) was a common year starting on Friday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 52
Started on: Wednesday
January 1, 1490
Ended on: Wednesday
December 31, 1490
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 1490s
1490–1499
Century: 15th century
1401–1500
Millennium: 2nd millennium
1001–2000
Years ago: 536
536 years before 2026.

In other calendars

Hebrew: 5250 / 5251 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 895 / 896 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Metal zodiac:Dog
Sexagenary cycle position 47 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 2033 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 868 / 869 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1482 / 1483 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1412 / 1411 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 4
Digit sum: 14
Digit product: 0
Digital root: 5
Palindrome: No
Bit width: 11 bits
Reversed: 941
Recamán's sequence: a(1,580) = 1,490
Square (n²): 2,220,100
Cube (n³): 3,307,949,000
Divisor count: 8
σ(n) — sum of divisors: 2,700
φ(n) — Euler's totient: 592
Sum of prime factors: 156

Primality

Prime factorization: 2 × 5 × 149

Nearest primes: 1,489 (−1) · 1,493 (+3)

Divisors & multiples

All divisors (8)

1 · 2 · 5 · 10 · 149 · 298 · 745 (half) · 1490

Aliquot sum (sum of proper divisors): 1,210

Factor pairs (a × b = 1,490)

1 × 1490

2 × 745

5 × 298

10 × 149

First multiples

1,490 · 2,980 (double) · 4,470 · 5,960 · 7,450 · 8,940 · 10,430 · 11,920 · 13,410 · 14,900

Sums & aliquot sequence

As a sum of two squares: 11² + 37² = 23² + 31²

As consecutive integers: 371 + 372 + 373 + 374 296 + 297 + 298 + 299 + 300 65 + 66 + … + 84

Aliquot sequence: 1,490 → 1,210 → 1,184 → 1,210 — enters a cycle

Continued fraction of √n

√1,490 = [38; (1, 1, 1, 1, 76)]

Period length 5 — the block in parentheses repeats forever.

Representations

In words: one thousand four hundred ninety
Ordinal: 1490th
Roman numeral: MCDXC
Binary: 10111010010
Octal: 2722
Hexadecimal: 0x5D2
Base64: BdI=
One's complement: 64,045 (16-bit)
Scientific notation: 1.49 × 10³
As a duration: 1,490 s = 24 minutes, 50 seconds

In other bases

ternary (3) 2001012

quaternary (4) 113102

quinary (5) 21430

senary (6) 10522

septenary (7) 4226

nonary (9) 2035

undecimal (11) 1135

duodecimal (12) a42

tridecimal (13) 8a8

tetradecimal (14) 786

pentadecimal (15) 695

Palindromic in base 13

As an angle

1,490° = 4 × 360° + 50°

50° ≈ 0.873 rad

Compass bearing: NE (northeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
Greek (Milesian): ͵αυϟʹ
Mayan (base 20): 𝋣·𝋮·𝋪
Chinese: 一千四百九十
Chinese (financial): 壹仟肆佰玖拾

In other modern scripts

Eastern Arabic ١٤٩٠ Devanagari १४९० Bengali ১৪৯০ Tamil ௧௪௯௦ Thai ๑๔๙๐ Tibetan ༡༤༩༠ Khmer ១៤៩០ Lao ໑໔໙໐ Burmese ၁၄၉၀

Digit at this position in famous constants

π — Pi (π): Digit 1,490 = 7
e — Euler's number (e): Digit 1,490 = 9
φ — Golden ratio (φ): Digit 1,490 = 3
√2 — Pythagoras's (√2): Digit 1,490 = 6
ln 2 — Natural log of 2: Digit 1,490 = 1
γ — Euler-Mascheroni (γ): Digit 1,490 = 0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1490, here are decompositions:

3 + 1487 = 1490
7 + 1483 = 1490
19 + 1471 = 1490
31 + 1459 = 1490
37 + 1453 = 1490
43 + 1447 = 1490
61 + 1429 = 1490
67 + 1423 = 1490

Showing the first eight; more decompositions exist.

Unicode codepoint

Hebrew Letter Gimel

U+05D2

Other letter (Lo)

UTF-8 encoding: D7 92 (2 bytes).

Lookup U+05D2 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0005D2

RGB(0, 5, 210)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.210.

Address: 0.0.5.210
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.5.210

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 1,490 Hz is closest to:

Concert pitch (A4 = 440 Hz): F♯6 (1480 Hz, +12¢)
Scientific pitch (C4 = 256 Hz): F♯6 (1448.2 Hz, +49¢ — about midway to G6)
Baroque pitch (A4 = 415 Hz): G6 (1478.9 Hz, +13¢)

Position in π

The digit sequence 1490 first appears in π at position 2,606 of the decimal expansion (the 2,606ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 1490 on Pi Search ↗