Number

799

799 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 799 AD

Calendar year

Year 799 (DCCXCIX) was a common year starting on Tuesday of the Julian calendar.

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Historical context — 799 BC

Decade

This article concerns the period 799 BC – 790 BC.

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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, 799
Ended on: Friday
December 31, 799
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 790s
790–799
Century: 8th century
701–800
Millennium: 1st millennium
1–1000
Years ago: 1,227
1227 years before 2026.

In other calendars

Hebrew: 4559 / 4560 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 182 / 183 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Earth zodiac:Rabbit
Sexagenary cycle position 16 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1342 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 177 / 178 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 791 / 792 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 721 / 720 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 25
Digit product: 567
Digital root: 7
Palindrome: No
Bit width: 10 bits
Reversed: 997
Recamán's sequence: a(293) = 799
Square (n²): 638,401
Cube (n³): 510,082,399
Divisor count: 4
σ(n) — sum of divisors: 864
φ(n) — Euler's totient: 736
Sum of prime factors: 64

Primality

Prime factorization: 17 × 47

Nearest primes: 797 (−2) · 809 (+10)

Divisors & multiples

All divisors (4)

1 · 17 · 47 · 799

Aliquot sum (sum of proper divisors): 65

Factor pairs (a × b = 799)

1 × 799

17 × 47

First multiples

799 · 1,598 (double) · 2,397 · 3,196 · 3,995 · 4,794 · 5,593 · 6,392 · 7,191 · 7,990

Sums & aliquot sequence

As consecutive integers: 399 + 400 39 + 40 + … + 55 7 + 8 + … + 40

Aliquot sequence: 799 → 65 → 19 → 1 → 0 — terminates at zero

Representations

In words: seven hundred ninety-nine
Ordinal: 799th
Roman numeral: DCCXCIX
Binary: 1100011111
Octal: 1437
Hexadecimal: 0x31F
Base64: Ax8=
One's complement: 64,736 (16-bit)

In other bases

ternary (3) 1002121

quaternary (4) 30133

quinary (5) 11144

senary (6) 3411

septenary (7) 2221

nonary (9) 1077

undecimal (11) 667

duodecimal (12) 567

tridecimal (13) 496

tetradecimal (14) 411

pentadecimal (15) 384

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ψϟθʹ
Mayan (base 20): 𝋡·𝋳·𝋳
Chinese: 七百九十九
Chinese (financial): 柒佰玖拾玖

In other modern scripts

Eastern Arabic ٧٩٩ Devanagari ७९९ Bengali ৭৯৯ Tamil ௭௯௯ Thai ๗๙๙ Tibetan ༧༩༩ Khmer ៧៩៩ Lao ໗໙໙ Burmese ၇၉၉

Digit at this position in famous constants

π — Pi (π): Digit 799 = 8
e — Euler's number (e): Digit 799 = 4
φ — Golden ratio (φ): Digit 799 = 1
√2 — Pythagoras's (√2): Digit 799 = 6
ln 2 — Natural log of 2: Digit 799 = 9
γ — Euler-Mascheroni (γ): Digit 799 = 1

Also seen as

Unicode codepoint

Combining Plus Sign Below

U+031F

Non-spacing mark (Mn)

UTF-8 encoding: CC 9F (2 bytes).

Lookup U+031F on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00031F

RGB(0, 3, 31)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.31.

Address: 0.0.3.31
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.3.31

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