Live analysis

988,990

988,990 is a composite number, even.

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.).

988,990 (nine hundred eighty-eight thousand nine hundred ninety) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 5 × 98,899. Written other ways, in hexadecimal, 0xF173E.

Arithmetic Number Cube-Free Deficient Number Flippable Odious Number Pernicious Number Sphenic Number Squarefree

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

988,978 988,979 988,980 988,981 988,982 988,983 988,984 988,985 988,986 988,987 988,988 988,989 988,990 988,991 988,992 988,993 988,994 988,995 988,996 988,997 988,998 988,999 989,000 989,001 989,002

less more

Properties

Parity: Even
Digit count: 6
Digit sum: 43
Digit product: 0
Digital root: 7
Palindrome: No
Bit width: 20 bits
Reversed: 99,889
Flips to (rotate 180°): 66,886
Square (n²): 978,101,220,100
Cube (n³): 967,332,325,666,699,000
Divisor count: 8
σ(n) — sum of divisors: 1,780,200
φ(n) — Euler's totient: 395,592
Sum of prime factors: 98,906

Primality

Prime factorization: 2 × 5 × 98899

Nearest primes: 988,979 (−11) · 989,011 (+21)

Divisors & multiples

All divisors (8)

1 · 2 · 5 · 10 · 98899 · 197798 · 494495 (half) · 988990

Aliquot sum (sum of proper divisors): 791,210

Factor pairs (a × b = 988,990)

1 × 988990

2 × 494495

5 × 197798

10 × 98899

First multiples

988,990 · 1,977,980 (double) · 2,966,970 · 3,955,960 · 4,944,950 · 5,933,940 · 6,922,930 · 7,911,920 · 8,900,910 · 9,889,900

Sums & aliquot sequence

As consecutive integers: 247,246 + 247,247 + 247,248 + 247,249 197,796 + 197,797 + 197,798 + 197,799 + 197,800 49,440 + 49,441 + … + 49,459

Aliquot sequence: 988,990 → 791,210 → 867,670 → 694,154 → 350,746 → 232,454 → 121,354 → 64,694 → 46,234 → 23,120 → 33,982 → 20,954 → 10,480 → 14,072 → 12,328 → 12,152 → 15,208 — unresolved within range

Continued fraction of √n

√988,990 = [994; (2, 11, 1, 5, 1, 5, 2, 5, 1, 1, 4, 1, 2, 9, 8, 1, 1, 2, 1, 2, 6, 36, 1, 2, …)]

Representations

In words: nine hundred eighty-eight thousand nine hundred ninety
Ordinal: 988990th
Binary: 11110001011100111110
Octal: 3613476
Hexadecimal: 0xF173E
Base64: Dxc+
One's complement: 4,293,978,305 (32-bit)
Scientific notation: 9.8899 × 10⁵
As a duration: 988,990 s = 11 days, 10 hours, 43 minutes, 10 seconds

In other bases

ternary (3) 1212020122021

quaternary (4) 3301130332

quinary (5) 223121430

senary (6) 33110354

septenary (7) 11256232

nonary (9) 1766567

undecimal (11) 616052

duodecimal (12) 3b83ba

tridecimal (13) 288202

tetradecimal (14) 1ba5c2

pentadecimal (15) 14807a

As an angle

988,990° = 2,747 × 360° + 70°

70° ≈ 1.222 rad

Compass bearing: ENE (east-northeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋
Egyptian hieroglyphic: 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
Greek (Milesian): ͵ϡπηϡϟʹ
Chinese: 九十八萬八千九百九十
Chinese (financial): 玖拾捌萬捌仟玖佰玖拾

In other modern scripts

Eastern Arabic ٩٨٨٩٩٠ Devanagari ९८८९९० Bengali ৯৮৮৯৯০ Tamil ௯௮௮௯௯௦ Thai ๙๘๘๙๙๐ Tibetan ༩༨༨༩༩༠ Khmer ៩៨៨៩៩០ Lao ໙໘໘໙໙໐ Burmese ၉၈၈၉၉၀

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 988990, here are decompositions:

11 + 988979 = 988990
53 + 988937 = 988990
89 + 988901 = 988990
113 + 988877 = 988990
131 + 988859 = 988990
227 + 988763 = 988990
257 + 988733 = 988990
263 + 988727 = 988990

Showing the first eight; more decompositions exist.

Hex color

#0F173E

RGB(15, 23, 62)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.23.62.

Address: 0.15.23.62
Class: reserved
IPv4-mapped IPv6: ::ffff:0.15.23.62

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 988,990 and was likely granted around 1911.

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

Look up US988,990 on Google Patents ↗ Look up on USPTO ↗