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Number

889

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

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

Historical context — 889 AD

Calendar year

Year 889 (DCCCLXXXIX) was a common year starting on Wednesday of the Julian calendar.

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Historical context — 889 BC

Decade

This article concerns the period 889 BC – 880 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: Saturday
January 1, 889
Ended on: Saturday
December 31, 889
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 880s
880–889
Century: 9th century
801–900
Millennium: 1st millennium
1–1000
Years ago: 1,137
1137 years before 2026.

In other calendars

Hebrew: 4649 / 4650 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 275 / 276 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Earth zodiac:Rooster
Sexagenary cycle position 46 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1432 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 267 / 268 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 881 / 882 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 811 / 810 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 25
Digit product: 576
Digital root: 7
Palindrome: No
Bit width: 10 bits
Reversed: 988
Flips to (rotate 180°): 688
Recamán's sequence: a(529) = 889
Square (n²): 790,321
Cube (n³): 702,595,369
Divisor count: 4
σ(n) — sum of divisors: 1,024
φ(n) — Euler's totient: 756
Sum of prime factors: 134

Primality

Prime factorization: 7 × 127

Nearest primes: 887 (−2) · 907 (+18)

Divisors & multiples

All divisors (4)

1 · 7 · 127 · 889

Aliquot sum (sum of proper divisors): 135

Factor pairs (a × b = 889)

1 × 889

7 × 127

First multiples

889 · 1,778 (double) · 2,667 · 3,556 · 4,445 · 5,334 · 6,223 · 7,112 · 8,001 · 8,890

Sums & aliquot sequence

As consecutive integers: 444 + 445 124 + 125 + … + 130 57 + 58 + … + 70

Aliquot sequence: 889 → 135 → 105 → 87 → 33 → 15 → 9 → 4 → 3 → 1 → 0 — terminates at zero

Representations

In words: eight hundred eighty-nine
Ordinal: 889th
Roman numeral: DCCCLXXXIX
Binary: 1101111001
Octal: 1571
Hexadecimal: 0x379
Base64: A3k=
One's complement: 64,646 (16-bit)

In other bases

ternary (3) 1012221

quaternary (4) 31321

quinary (5) 12024

senary (6) 4041

septenary (7) 2410

nonary (9) 1187

undecimal (11) 739

duodecimal (12) 621

tridecimal (13) 535

tetradecimal (14) 477

pentadecimal (15) 3e4

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ωπθʹ
Mayan (base 20): 𝋢·𝋤·𝋩
Chinese: 八百八十九
Chinese (financial): 捌佰捌拾玖

In other modern scripts

Eastern Arabic ٨٨٩ Devanagari ८८९ Bengali ৮৮৯ Tamil ௮௮௯ Thai ๘๘๙ Tibetan ༨༨༩ Khmer ៨៨៩ Lao ໘໘໙ Burmese ၈၈၉

Digit at this position in famous constants

π — Pi (π): Digit 889 = 7
e — Euler's number (e): Digit 889 = 3
φ — Golden ratio (φ): Digit 889 = 8
√2 — Pythagoras's (√2): Digit 889 = 5
ln 2 — Natural log of 2: Digit 889 = 8
γ — Euler-Mascheroni (γ): Digit 889 = 4

Also seen as

Hex color

#000379

RGB(0, 3, 121)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.121.

Address: 0.0.3.121
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.3.121

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