Number

879

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

879 (eight hundred seventy-nine) is an odd 3-digit number. It is a composite number with 4 divisors, and factors as 3 × 293. Written other ways, in Roman numerals it is DCCCLXXIX and in binary, 1101101111.

Arithmetic Number Cube-Free Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree Year

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891

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Historical context — 879 AD

Calendar year

Year 879 (DCCCLXXIX) was a common year starting on Thursday of the Julian calendar.

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

Historical context — 879 BC

Decade

This article concerns the period 879 BC – 870 BC.

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: Sunday
January 1, 879
Ended on: Sunday
December 31, 879
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 870s
870–879
Century: 9th century
801–900
Millennium: 1st millennium
1–1000
Years ago: 1,147
1147 years before 2026.

In other calendars

Hebrew: 4639 / 4640 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 265 / 266 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Earth zodiac:Pig
Sexagenary cycle position 36 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1422 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 257 / 258 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 871 / 872 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 801 / 800 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 24
Digit product: 504
Digital root: 6
Palindrome: No
Bit width: 10 bits
Reversed: 978
Recamán's sequence: a(328,002) = 879
Square (n²): 772,641
Cube (n³): 679,151,439
Divisor count: 4
σ(n) — sum of divisors: 1,176
φ(n) — Euler's totient: 584
Sum of prime factors: 296

Primality

Prime factorization: 3 × 293

Nearest primes: 877 (−2) · 881 (+2)

Divisors & multiples

All divisors (4)

1 · 3 · 293 · 879

Aliquot sum (sum of proper divisors): 297

Factor pairs (a × b = 879)

1 × 879

3 × 293

First multiples

879 · 1,758 (double) · 2,637 · 3,516 · 4,395 · 5,274 · 6,153 · 7,032 · 7,911 · 8,790

Sums & aliquot sequence

As consecutive integers: 439 + 440 292 + 293 + 294 144 + 145 + 146 + 147 + 148 + 149

Aliquot sequence: 879 → 297 → 183 → 65 → 19 → 1 → 0 — terminates at zero

Continued fraction of √n

√879 = [29; (1, 1, 1, 5, 3, 1, 3, 2, 9, 2, 3, 1, 3, 5, 1, 1, 1, 58)]

Period length 18 — the block in parentheses repeats forever.

Representations

In words: eight hundred seventy-nine
Ordinal: 879th
Roman numeral: DCCCLXXIX
Binary: 1101101111
Octal: 1557
Hexadecimal: 0x36F
Base64: A28=
One's complement: 64,656 (16-bit)
Scientific notation: 8.79 × 10²
As a duration: 879 s = 14 minutes, 39 seconds

In other bases

ternary (3) 1012120

quaternary (4) 31233

quinary (5) 12004

senary (6) 4023

septenary (7) 2364

nonary (9) 1176

undecimal (11) 72a

duodecimal (12) 613

tridecimal (13) 528

tetradecimal (14) 46b

pentadecimal (15) 3d9

As an angle

879° = 2 × 360° + 159°

159° ≈ 2.775 rad

Compass bearing: SSE (south-southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ωοθʹ
Mayan (base 20): 𝋢·𝋣·𝋳
Chinese: 八百七十九
Chinese (financial): 捌佰柒拾玖

In other modern scripts

Eastern Arabic ٨٧٩ Devanagari ८७९ Bengali ৮৭৯ Tamil ௮௭௯ Thai ๘๗๙ Tibetan ༨༧༩ Khmer ៨៧៩ Lao ໘໗໙ Burmese ၈၇၉

Digit at this position in famous constants

π — Pi (π): Digit 879 = 0
e — Euler's number (e): Digit 879 = 5
φ — Golden ratio (φ): Digit 879 = 6
√2 — Pythagoras's (√2): Digit 879 = 0
ln 2 — Natural log of 2: Digit 879 = 9
γ — Euler-Mascheroni (γ): Digit 879 = 0

Also seen as

Unicode codepoint

Combining Latin Small Letter X

U+036F

Non-spacing mark (Mn)

UTF-8 encoding: CD AF (2 bytes).

Lookup U+036F on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00036F

RGB(0, 3, 111)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.111.

Address: 0.0.3.111
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.3.111

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

Musical pitch

Heard as a frequency, 879 Hz is closest to:

Concert pitch (A4 = 440 Hz): A5 (880 Hz, -2¢)
Scientific pitch (C4 = 256 Hz): A5 (861.1 Hz, +36¢)
Baroque pitch (A4 = 415 Hz): A♯5 (879.4 Hz, -1¢)