Number

790

790 is a composite number, even, a calendar year.

Arithmetic Number Deficient Number Happy Number Odious Number Pernicious Number Recamán's Sequence Sphenic Number Squarefree Year

Historical context — 790 AD

Calendar year

Year 790 (DCCXC) was a common year starting on Friday of the Julian calendar, the 790th year of the Common Era (CE) and Anno Domini (AD) designations, the 790th year of the 1st millennium, the 90th year of the 8th century, and the 1st year of the 790s decade.

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

Historical context — 790 BC

Decade

This article concerns the period 799 BC – 790 BC.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback 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: Monday
January 1, 790
Ended on: Monday
December 31, 790
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 790s
790–799
Century: 8th century
701–800
Millennium: 1st millennium
1–1000
Years ago: 1,236
1236 years before 2026.

In other calendars

Hebrew: 4550 / 4551 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 173 / 174 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Metal zodiac:Horse
Sexagenary cycle position 7 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1333 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 168 / 169 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 782 / 783 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 712 / 711 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 16
Digit product: 0
Digital root: 7
Palindrome: No
Bit width: 10 bits
Reversed: 97
Recamán's sequence: a(16,755) = 790
Square (n²): 624,100
Cube (n³): 493,039,000
Divisor count: 8
σ(n) — sum of divisors: 1,440
φ(n) — Euler's totient: 312
Sum of prime factors: 86

Primality

Prime factorization: 2 × 5 × 79

Nearest primes: 787 (−3) · 797 (+7)

Divisors & multiples

All divisors (8)

1 · 2 · 5 · 10 · 79 · 158 · 395 (half) · 790

Aliquot sum (sum of proper divisors): 650

Factor pairs (a × b = 790)

1 × 790

2 × 395

5 × 158

10 × 79

First multiples

790 · 1,580 (double) · 2,370 · 3,160 · 3,950 · 4,740 · 5,530 · 6,320 · 7,110 · 7,900

Sums & aliquot sequence

As consecutive integers: 196 + 197 + 198 + 199 156 + 157 + 158 + 159 + 160 30 + 31 + … + 49

Aliquot sequence: 790 → 650 → 652 → 496 → 496 — reaches a perfect number

Representations

In words: seven hundred ninety
Ordinal: 790th
Roman numeral: DCCXC
Binary: 1100010110
Octal: 1426
Hexadecimal: 0x316
Base64: AxY=
One's complement: 64,745 (16-bit)

In other bases

ternary (3) 1002021

quaternary (4) 30112

quinary (5) 11130

senary (6) 3354

septenary (7) 2206

nonary (9) 1067

undecimal (11) 659

duodecimal (12) 55a

tridecimal (13) 48a

tetradecimal (14) 406

pentadecimal (15) 37a

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹 𒌋
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
Greek (Milesian): ψϟʹ
Mayan (base 20): 𝋡·𝋳·𝋪
Chinese: 七百九十
Chinese (financial): 柒佰玖拾

In other modern scripts

Eastern Arabic ٧٩٠ Devanagari ७९० Bengali ৭৯০ Tamil ௭௯௦ Thai ๗๙๐ Tibetan ༧༩༠ Khmer ៧៩០ Lao ໗໙໐ Burmese ၇၉၀

Digit at this position in famous constants

π — Pi (π): Digit 790 = 2
e — Euler's number (e): Digit 790 = 4
φ — Golden ratio (φ): Digit 790 = 1
√2 — Pythagoras's (√2): Digit 790 = 6
ln 2 — Natural log of 2: Digit 790 = 3
γ — Euler-Mascheroni (γ): Digit 790 = 0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 790, here are decompositions:

3 + 787 = 790
17 + 773 = 790
29 + 761 = 790
47 + 743 = 790
71 + 719 = 790
89 + 701 = 790
107 + 683 = 790
113 + 677 = 790

Showing the first eight; more decompositions exist.

Unicode codepoint

Combining Grave Accent Below

U+0316

Non-spacing mark (Mn)

UTF-8 encoding: CC 96 (2 bytes).

Lookup U+0316 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000316

RGB(0, 3, 22)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.22.

Address: 0.0.3.22
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.3.22

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