Live analysis

4,981

4,981 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

4,981 (four thousand nine hundred eighty-one) is an odd 4-digit number. It is a composite number with 4 divisors, and factors as 17 × 293. Written other ways, in hexadecimal, 0x1375.

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

Interestingness

★ ★ ★ ★ ☆

6 notable facts · grade B

4,969 4,970 4,971 4,972 4,973 4,974 4,975 4,976 4,977 4,978 4,979 4,980 4,981 4,982 4,983 4,984 4,985 4,986 4,987 4,988 4,989 4,990 4,991 4,992 4,993

less more

Properties

Parity: Odd
Digit count: 4
Digit sum: 22
Digit product: 288
Digital root: 4
Palindrome: No
Bit width: 13 bits
Reversed: 1,894
Recamán's sequence: a(28,166) = 4,981
Square (n²): 24,810,361
Cube (n³): 123,580,408,141
Divisor count: 4
σ(n) — sum of divisors: 5,292
φ(n) — Euler's totient: 4,672
Sum of prime factors: 310

Primality

Prime factorization: 17 × 293

Nearest primes: 4,973 (−8) · 4,987 (+6)

Divisors & multiples

All divisors (4)

1 · 17 · 293 · 4981

Aliquot sum (sum of proper divisors): 311

Factor pairs (a × b = 4,981)

1 × 4981

17 × 293

First multiples

4,981 · 9,962 (double) · 14,943 · 19,924 · 24,905 · 29,886 · 34,867 · 39,848 · 44,829 · 49,810

Sums & aliquot sequence

As a sum of two squares: 9² + 70² = 25² + 66²

As consecutive integers: 2,490 + 2,491 285 + 286 + … + 301 130 + 131 + … + 163

Aliquot sequence: 4,981 → 311 → 1 → 0 — terminates at zero

Continued fraction of √n

√4,981 = [70; (1, 1, 2, 1, 3, 1, 1, 3, 2, 8, 1, 34, 2, 1, 1, 6, 8, 6, 1, 1, 2, 34, 1, 8, …)]

Period length 34 — the block in parentheses repeats forever.

Representations

In words: four thousand nine hundred eighty-one
Ordinal: 4981st
Binary: 1001101110101
Octal: 11565
Hexadecimal: 0x1375
Base64: E3U=
One's complement: 60,554 (16-bit)
Scientific notation: 4.981 × 10³
As a duration: 4,981 s = 1 hour, 23 minutes, 1 second

In other bases

ternary (3) 20211111

quaternary (4) 1031311

quinary (5) 124411

senary (6) 35021

septenary (7) 20344

nonary (9) 6744

undecimal (11) 3819

duodecimal (12) 2a71

tridecimal (13) 2362

tetradecimal (14) 1b5b

pentadecimal (15) 1721

As an angle

4,981° = 13 × 360° + 301°

301° ≈ 5.253 rad

Compass bearing: WNW (west-northwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹 𒌋𒌋𒁹𒁹𒁹 𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵δϡπαʹ
Mayan (base 20): 𝋬·𝋩·𝋡
Chinese: 四千九百八十一
Chinese (financial): 肆仟玖佰捌拾壹

In other modern scripts

Eastern Arabic ٤٩٨١ Devanagari ४९८१ Bengali ৪৯৮১ Tamil ௪௯௮௧ Thai ๔๙๘๑ Tibetan ༤༩༨༡ Khmer ៤៩៨១ Lao ໔໙໘໑ Burmese ၄၉၈၁

Digit at this position in famous constants

π — Pi (π): Digit 4,981 = 0
e — Euler's number (e): Digit 4,981 = 9
φ — Golden ratio (φ): Digit 4,981 = 2
√2 — Pythagoras's (√2): Digit 4,981 = 3
ln 2 — Natural log of 2: Digit 4,981 = 7
γ — Euler-Mascheroni (γ): Digit 4,981 = 9

Also seen as

Unicode codepoint

፵

Ethiopic Number Forty

U+1375

Other number (No)

UTF-8 encoding: E1 8D B5 (3 bytes).

Lookup U+1375 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#001375

RGB(0, 19, 117)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.19.117.

Address: 0.0.19.117
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.19.117

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

Musical pitch

Heard as a frequency, 4,981 Hz is closest to:

Concert pitch (A4 = 440 Hz): D♯8 (4978 Hz, +1¢)
Scientific pitch (C4 = 256 Hz): D♯8 (4871 Hz, +39¢)
Baroque pitch (A4 = 415 Hz): E8 (4974.4 Hz, +2¢)

Position in π

The digit sequence 4981 first appears in π at position 12,113 of the decimal expansion (the 12,113ordinal-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 4981 on Pi Search ↗