Number

873

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

Deficient Number Descending Digits Evil Number Recamán's Sequence Year

Historical context — 873 AD

Calendar year

Year 873 (DCCCLXXIII) was a common year starting on Thursday of the Julian calendar.

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Historical context — 873 BC

Decade

This article concerns the period 879 BC – 870 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: Sunday
January 1, 873
Ended on: Sunday
December 31, 873
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: 1,153
1153 years before 2026.

In other calendars

Hebrew: 4633 / 4634 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 259 / 260 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Water zodiac:Snake
Sexagenary cycle position 30 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1416 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 251 / 252 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 865 / 866 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 795 / 794 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 18
Digit product: 168
Digital root: 9
Palindrome: No
Bit width: 10 bits
Reversed: 378
Recamán's sequence: a(785) = 873
Square (n²): 762,129
Cube (n³): 665,338,617
Divisor count: 6
σ(n) — sum of divisors: 1,274
φ(n) — Euler's totient: 576
Sum of prime factors: 103

Primality

Prime factorization: 3 ² × 97

Nearest primes: 863 (−10) · 877 (+4)

Divisors & multiples

All divisors (6)

1 · 3 · 9 · 97 · 291 · 873

Aliquot sum (sum of proper divisors): 401

Factor pairs (a × b = 873)

1 × 873

3 × 291

9 × 97

First multiples

873 · 1,746 (double) · 2,619 · 3,492 · 4,365 · 5,238 · 6,111 · 6,984 · 7,857 · 8,730

Sums & aliquot sequence

As a sum of two squares: 12² + 27²

As consecutive integers: 436 + 437 290 + 291 + 292 143 + 144 + 145 + 146 + 147 + 148 93 + 94 + … + 101

Aliquot sequence: 873 → 401 → 1 → 0 — terminates at zero

Representations

In words: eight hundred seventy-three
Ordinal: 873rd
Roman numeral: DCCCLXXIII
Binary: 1101101001
Octal: 1551
Hexadecimal: 0x369
Base64: A2k=
One's complement: 64,662 (16-bit)

In other bases

ternary (3) 1012100

quaternary (4) 31221

quinary (5) 11443

senary (6) 4013

septenary (7) 2355

nonary (9) 1170

undecimal (11) 724

duodecimal (12) 609

tridecimal (13) 522

tetradecimal (14) 465

pentadecimal (15) 3d3

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian): ωογʹ
Mayan (base 20): 𝋢·𝋣·𝋭
Chinese: 八百七十三
Chinese (financial): 捌佰柒拾參

In other modern scripts

Eastern Arabic ٨٧٣ Devanagari ८७३ Bengali ৮৭৩ Tamil ௮௭௩ Thai ๘๗๓ Tibetan ༨༧༣ Khmer ៨៧៣ Lao ໘໗໓ Burmese ၈၇၃

Digit at this position in famous constants

π — Pi (π): Digit 873 = 8
e — Euler's number (e): Digit 873 = 4
φ — Golden ratio (φ): Digit 873 = 5
√2 — Pythagoras's (√2): Digit 873 = 1
ln 2 — Natural log of 2: Digit 873 = 0
γ — Euler-Mascheroni (γ): Digit 873 = 8

Also seen as

Unicode codepoint

Combining Latin Small Letter D

U+0369

Non-spacing mark (Mn)

UTF-8 encoding: CD A9 (2 bytes).

Lookup U+0369 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000369

RGB(0, 3, 105)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.105.

Address: 0.0.3.105
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.3.105

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

NANP area code 873

The number 873 is an active NANP area code (North American Numbering Plan).

Primary area: Western Québec
Region: Québec
Country: Canada

Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.

Look up area code 873 ↗