Number

1,879

1,879 is a prime, odd, a calendar year.

1,879 (one thousand eight hundred seventy-nine) is an odd 4-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in Roman numerals it is MDCCCLXXIX and in binary, 11101010111.

Arithmetic Number Binary Palindrome Cube-Free Deficient Number Emirp Evil Number Prime Recamán's Sequence Sexy Prime Squarefree Twin Prime Year

Interestingness

★ ★ ★ ★ ★

9 notable facts · grade A

1,867 1,868 1,869 1,870 1,871 1,872 1,873 1,874 1,875 1,876 1,877 1,878 1,879 1,880 1,881 1,882 1,883 1,884 1,885 1,886 1,887 1,888 1,889 1,890 1,891

less more

Notable events — 1879 AD

Oct 21 Edison successfully tests a long-lasting incandescent light bulb.
Jan 22 British forces are slaughtered at Isandlwana during the Anglo-Zulu War.
Mar 14 Albert Einstein is born in Ulm, Württemberg.
Apr 5 Chile declares war on Bolivia and Peru in the War of the Pacific.
Dec 28 The Tay Bridge in Scotland collapses in a storm, killing 75 train passengers.

Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0

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, 1879
Ended on: Wednesday
December 31, 1879
Friday the 13ths: 1
One Friday the 13th this year.
Easter Sunday: April 13
Sunday, April 13, 1879
Decade: 1870s
1870–1879
Century: 19th century
1801–1900
Millennium: 2nd millennium
1001–2000
Years ago: 147
147 years before 2026.

In other calendars

Hebrew: 5639 / 5640 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 1296 / 1297 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: 2422 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 1257 / 1258 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1871 / 1872 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1801 / 1800 Saka
Indian national calendar; year starts in March.
Japanese: Meiji 12
Reign-era counting from the start of each emperor's reign.

Properties

Parity: Odd
Digit count: 4
Digit sum: 25
Digit product: 504
Digital root: 7
Palindrome: No
Bit width: 11 bits
Reversed: 9,781
Recamán's sequence: a(7,986) = 1,879
Square (n²): 3,530,641
Cube (n³): 6,634,074,439
Divisor count: 2
σ(n) — sum of divisors: 1,880
φ(n) — Euler's totient: 1,878

Primality

1,879 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 1879

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 1,879)

1 × 1879

First multiples

1,879 · 3,758 (double) · 5,637 · 7,516 · 9,395 · 11,274 · 13,153 · 15,032 · 16,911 · 18,790

Sums & aliquot sequence

As consecutive integers: 939 + 940

Continued fraction of √n

√1,879 = [43; (2, 1, 7, 4, 1, 2, 5, 2, 2, 1, 3, 17, 14, 2, 1, 1, 3, 1, 28, 8, 1, 1, 1, 2, …)]

Representations

In words: one thousand eight hundred seventy-nine
Ordinal: 1879th
Roman numeral: MDCCCLXXIX
Binary: 11101010111
Octal: 3527
Hexadecimal: 0x757
Base64: B1c=
One's complement: 63,656 (16-bit)
Scientific notation: 1.879 × 10³
As a duration: 1,879 s = 31 minutes, 19 seconds

In other bases

ternary (3) 2120121

quaternary (4) 131113

quinary (5) 30004

senary (6) 12411

septenary (7) 5323

nonary (9) 2517

undecimal (11) 1459

duodecimal (12) 1107

tridecimal (13) b17

tetradecimal (14) 983

pentadecimal (15) 854

Palindromic in base 2, base 16

As an angle

1,879° = 5 × 360° + 79°

79° ≈ 1.379 rad

Compass bearing: E (east)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵αωοθʹ
Mayan (base 20): 𝋤·𝋭·𝋳
Chinese: 一千八百七十九
Chinese (financial): 壹仟捌佰柒拾玖

In other modern scripts

Eastern Arabic ١٨٧٩ Devanagari १८७९ Bengali ১৮৭৯ Tamil ௧௮௭௯ Thai ๑๘๗๙ Tibetan ༡༨༧༩ Khmer ១៨៧៩ Lao ໑໘໗໙ Burmese ၁၈၇၉

Digit at this position in famous constants

π — Pi (π): Digit 1,879 = 4
e — Euler's number (e): Digit 1,879 = 8
φ — Golden ratio (φ): Digit 1,879 = 8
√2 — Pythagoras's (√2): Digit 1,879 = 6
ln 2 — Natural log of 2: Digit 1,879 = 7
γ — Euler-Mascheroni (γ): Digit 1,879 = 9

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 1,877 (gap of 2)
Next prime: 1,889 (gap of 10)

Pair status: twin with 1877.

Unicode codepoint

Arabic Letter Hah With Two Dots Above

U+0757

Other letter (Lo)

UTF-8 encoding: DD 97 (2 bytes).

Lookup U+0757 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000757

RGB(0, 7, 87)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.87.

Address: 0.0.7.87
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.7.87

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

Musical pitch

Heard as a frequency, 1,879 Hz is closest to:

Concert pitch (A4 = 440 Hz): A♯6 (1864.7 Hz, +13¢)
Scientific pitch (C4 = 256 Hz): B6 (1933.1 Hz, -49¢ — about midway to A♯6)
Baroque pitch (A4 = 415 Hz): B6 (1863.3 Hz, +15¢)

Position in π

The digit sequence 1879 first appears in π at position 6,150 of the decimal expansion (the 6,150ordinal-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 1879 on Pi Search ↗