Live analysis

981,001

981,001 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.).

981,001 (nine hundred eighty-one thousand one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 7 × 140,143. Written other ways, in hexadecimal, 0xEF809.

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

Interestingness

★ ★ ★ ★ ☆

7 notable facts · grade B

980,989 980,990 980,991 980,992 980,993 980,994 980,995 980,996 980,997 980,998 980,999 981,000 981,001 981,002 981,003 981,004 981,005 981,006 981,007 981,008 981,009 981,010 981,011 981,012 981,013

less more

Properties

Parity: Odd
Digit count: 6
Digit sum: 19
Digit product: 0
Digital root: 1
Palindrome: No
Bit width: 20 bits
Reversed: 100,189
Flips to (rotate 180°): 100,186
Recamán's sequence: a(324,409) = 981,001
Square (n²): 962,362,962,001
Cube (n³): 944,079,028,085,943,001
Divisor count: 4
σ(n) — sum of divisors: 1,121,152
φ(n) — Euler's totient: 840,852
Sum of prime factors: 140,150

Primality

Prime factorization: 7 × 140143

Nearest primes: 980,999 (−2) · 981,011 (+10)

Divisors & multiples

All divisors (4)

1 · 7 · 140143 · 981001

Aliquot sum (sum of proper divisors): 140,151

Factor pairs (a × b = 981,001)

1 × 981001

7 × 140143

First multiples

981,001 · 1,962,002 (double) · 2,943,003 · 3,924,004 · 4,905,005 · 5,886,006 · 6,867,007 · 7,848,008 · 8,829,009 · 9,810,010

Sums & aliquot sequence

As consecutive integers: 490,500 + 490,501 140,140 + 140,141 + … + 140,146 70,065 + 70,066 + … + 70,078

Aliquot sequence: 981,001 → 140,151 → 71,817 → 26,679 → 8,897 → 1,855 → 737 → 79 → 1 → 0 — terminates at zero

Continued fraction of √n

√981,001 = [990; (2, 5, 20, 2, 4, 1, 3, 1, 1, 4, 26, 5, 5, 3, 3, 2, 5, 1, 2, 1, 3, 1, 11, 1, …)]

Period length 56 — the block in parentheses repeats forever.

Representations

In words: nine hundred eighty-one thousand one
Ordinal: 981001st
Binary: 11101111100000001001
Octal: 3574011
Hexadecimal: 0xEF809
Base64: DvgJ
One's complement: 4,293,986,294 (32-bit)
Scientific notation: 9.81001 × 10⁵
As a duration: 981,001 s = 11 days, 8 hours, 30 minutes, 1 second

In other bases

ternary (3) 1211211200101

quaternary (4) 3233200021

quinary (5) 222343001

senary (6) 33005401

septenary (7) 11224030

nonary (9) 1754611

undecimal (11) 61004a

duodecimal (12) 3b3861

tridecimal (13) 284698

tetradecimal (14) 1b7717

pentadecimal (15) 145a01

As an angle

981,001° = 2,725 × 360° + 1°

1° ≈ 0.017 rad

Compass bearing: N (north)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋 𒁹
Egyptian hieroglyphic: 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓏺
Greek (Milesian): ͵ϡπααʹ
Chinese: 九十八萬一千零一
Chinese (financial): 玖拾捌萬壹仟零壹

In other modern scripts

Eastern Arabic ٩٨١٠٠١ Devanagari ९८१००१ Bengali ৯৮১০০১ Tamil ௯௮௧௦௦௧ Thai ๙๘๑๐๐๑ Tibetan ༩༨༡༠༠༡ Khmer ៩៨១០០១ Lao ໙໘໑໐໐໑ Burmese ၉၈၁၀၀၁

Also seen as

Hex color

#0EF809

RGB(14, 248, 9)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.14.248.9.

Address: 0.14.248.9
Class: reserved
IPv4-mapped IPv6: ::ffff:0.14.248.9

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

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 981,001 and was likely granted around 1910.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Look up US981,001 on Google Patents ↗ Look up on USPTO ↗