Number

449

449 is a prime, odd, a calendar year.

Arithmetic Number Chen Prime Deficient Number Evil Number Prime Pythagorean Prime Recamán's Sequence Sexy Prime Squarefree Year

Historical context — 449 AD

Calendar year

Year 449 (CDXLIX) was a common year starting on Saturday of the Julian calendar.

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Historical context — 449 BC

Calendar year

Year 449 BC was a year of the pre-Julian Roman calendar.

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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: Friday
January 1, 449
Ended on: Friday
December 31, 449
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 440s
440–449
Century: 5th century
401–500
Millennium: 1st millennium
1–1000
Years ago: 1,577
1577 years before 2026.

In other calendars

Hebrew: 4209 / 4210 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Earth zodiac:Ox
Sexagenary cycle position 26 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 992 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 441 / 442 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 371 / 370 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 17
Digit product: 144
Digital root: 8
Palindrome: No
Bit width: 9 bits
Reversed: 944
Recamán's sequence: a(9,014) = 449
Square (n²): 201,601
Cube (n³): 90,518,849
Divisor count: 2
σ(n) — sum of divisors: 450
φ(n) — Euler's totient: 448

Primality

449 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 449

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 449)

1 × 449

First multiples

449 · 898 (double) · 1,347 · 1,796 · 2,245 · 2,694 · 3,143 · 3,592 · 4,041 · 4,490

Sums & aliquot sequence

As a sum of two squares: 7² + 20²

As consecutive integers: 224 + 225

Representations

In words: four hundred forty-nine
Ordinal: 449th
Roman numeral: CDXLIX
Binary: 111000001
Octal: 701
Hexadecimal: 0x1C1
Base64: AcE=
One's complement: 65,086 (16-bit)

In other bases

ternary (3) 121122

quaternary (4) 13001

quinary (5) 3244

senary (6) 2025

septenary (7) 1211

nonary (9) 548

undecimal (11) 379

duodecimal (12) 315

tridecimal (13) 287

tetradecimal (14) 241

pentadecimal (15) 1ee

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): υμθʹ
Mayan (base 20): 𝋡·𝋢·𝋩
Chinese: 四百四十九
Chinese (financial): 肆佰肆拾玖

In other modern scripts

Eastern Arabic ٤٤٩ Devanagari ४४९ Bengali ৪৪৯ Tamil ௪௪௯ Thai ๔๔๙ Tibetan ༤༤༩ Khmer ៤៤៩ Lao ໔໔໙ Burmese ၄၄၉

Digit at this position in famous constants

π — Pi (π): Digit 449 = 5
e — Euler's number (e): Digit 449 = 6
φ — Golden ratio (φ): Digit 449 = 0
√2 — Pythagoras's (√2): Digit 449 = 4
ln 2 — Natural log of 2: Digit 449 = 6
γ — Euler-Mascheroni (γ): Digit 449 = 9

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 443 (gap of 6)
Next prime: 457 (gap of 8)

Pair status: sexy with 443.

Unicode codepoint

Latin Letter Lateral Click

U+01C1

Other letter (Lo)

UTF-8 encoding: C7 81 (2 bytes).

Lookup U+01C1 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0001C1

RGB(0, 1, 193)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.193.

Address: 0.0.1.193
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.193

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