Number

893

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

893 (eight hundred ninety-three) is an odd 3-digit number. It is a composite number with 4 divisors, and factors as 19 × 47. Written other ways, in Roman numerals it is DCCCXCIII and in binary, 1101111101.

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

Interestingness

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5 notable facts · grade C

881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905

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Historical context — 893 AD

Calendar year

Year 893 (DCCCXCIII) was a common year starting on Monday of the Julian calendar.

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

Historical context — 893 BC

Decade

This article concerns the period 899 BC – 890 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: 53
Long year: contains 53 ISO weeks.
Started on: Thursday
January 1, 893
Ended on: Thursday
December 31, 893
Friday the 13ths: 3
3 Friday the 13ths this year.
Decade: 890s
890–899
Century: 9th century
801–900
Millennium: 1st millennium
1–1000
Years ago: 1,133
1133 years before 2026.

In other calendars

Hebrew: 4653 / 4654 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 279 / 280 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Water zodiac:Ox
Sexagenary cycle position 50 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1436 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 271 / 272 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 885 / 886 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 815 / 814 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 20
Digit product: 216
Digital root: 2
Palindrome: No
Bit width: 10 bits
Reversed: 398
Recamán's sequence: a(469) = 893
Square (n²): 797,449
Cube (n³): 712,121,957
Divisor count: 4
σ(n) — sum of divisors: 960
φ(n) — Euler's totient: 828
Sum of prime factors: 66

Primality

Prime factorization: 19 × 47

Nearest primes: 887 (−6) · 907 (+14)

Divisors & multiples

All divisors (4)

1 · 19 · 47 · 893

Aliquot sum (sum of proper divisors): 67

Factor pairs (a × b = 893)

1 × 893

19 × 47

First multiples

893 · 1,786 (double) · 2,679 · 3,572 · 4,465 · 5,358 · 6,251 · 7,144 · 8,037 · 8,930

Sums & aliquot sequence

As consecutive integers: 446 + 447 38 + 39 + … + 56 5 + 6 + … + 42

Aliquot sequence: 893 → 67 → 1 → 0 — terminates at zero

Continued fraction of √n

√893 = [29; (1, 7, 1, 1, 4, 14, 1, 2, 1, 1, 2, 1, 1, 2, 1, 14, 4, 1, 1, 7, 1, 58)]

Period length 22 — the block in parentheses repeats forever.

Representations

In words: eight hundred ninety-three
Ordinal: 893rd
Roman numeral: DCCCXCIII
Binary: 1101111101
Octal: 1575
Hexadecimal: 0x37D
Base64: A30=
One's complement: 64,642 (16-bit)
Scientific notation: 8.93 × 10²
As a duration: 893 s = 14 minutes, 53 seconds

In other bases

ternary (3) 1020002

quaternary (4) 31331

quinary (5) 12033

senary (6) 4045

septenary (7) 2414

nonary (9) 1202

undecimal (11) 742

duodecimal (12) 625

tridecimal (13) 539

tetradecimal (14) 47b

pentadecimal (15) 3e8

As an angle

893° = 2 × 360° + 173°

173° ≈ 3.019 rad

Compass bearing: S (south)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian): ωϟγʹ
Mayan (base 20): 𝋢·𝋤·𝋭
Chinese: 八百九十三
Chinese (financial): 捌佰玖拾參

In other modern scripts

Eastern Arabic ٨٩٣ Devanagari ८९३ Bengali ৮৯৩ Tamil ௮௯௩ Thai ๘๙๓ Tibetan ༨༩༣ Khmer ៨៩៣ Lao ໘໙໓ Burmese ၈၉၃

Digit at this position in famous constants

π — Pi (π): Digit 893 = 6
e — Euler's number (e): Digit 893 = 8
φ — Golden ratio (φ): Digit 893 = 2
√2 — Pythagoras's (√2): Digit 893 = 2
ln 2 — Natural log of 2: Digit 893 = 7
γ — Euler-Mascheroni (γ): Digit 893 = 9

Also seen as

Unicode codepoint

Greek Small Reversed Dotted Lunate Sigma Symbol

U+037D

Lowercase letter (Ll)

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

Lookup U+037D on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00037D

RGB(0, 3, 125)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.125.

Address: 0.0.3.125
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.3.125

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

Musical pitch

Heard as a frequency, 893 Hz is closest to:

Concert pitch (A4 = 440 Hz): A5 (880 Hz, +25¢)
Scientific pitch (C4 = 256 Hz): A♯5 (912.3 Hz, -37¢)
Baroque pitch (A4 = 415 Hz): A♯5 (879.4 Hz, +27¢)