Live analysis

1,001,990

1,001,990 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.).

1,001,990 (one million one thousand nine hundred ninety) is an even 7-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 11 × 9,109. Written other ways, in hexadecimal, 0xF4A06.

Arithmetic Number Cube-Free Deficient Number Flippable Gapful Number Odious Number Squarefree

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

1,001,978 1,001,979 1,001,980 1,001,981 1,001,982 1,001,983 1,001,984 1,001,985 1,001,986 1,001,987 1,001,988 1,001,989 1,001,990 1,001,991 1,001,992 1,001,993 1,001,994 1,001,995 1,001,996 1,001,997 1,001,998 1,001,999 1,002,000 1,002,001 1,002,002

less more

Properties

Parity: Even
Digit count: 7
Digit sum: 20
Digit product: 0
Digital root: 2
Palindrome: No
Bit width: 20 bits
Reversed: 991,001
Flips to (rotate 180°): 661,001
Square (n²): 1,003,983,960,100
Cube (n³): 1,005,981,888,180,599,000
Divisor count: 16
σ(n) — sum of divisors: 1,967,760
φ(n) — Euler's totient: 364,320
Sum of prime factors: 9,127

Primality

Prime factorization: 2 × 5 × 11 × 9109

Nearest primes: 1,001,989 (−1) · 1,002,017 (+27)

Divisors & multiples

All divisors (16)

1 · 2 · 5 · 10 · 11 · 22 · 55 · 110 · 9109 · 18218 · 45545 · 91090 · 100199 · 200398 · 500995 (half) · 1001990

Aliquot sum (sum of proper divisors): 965,770

Factor pairs (a × b = 1,001,990)

1 × 1001990

2 × 500995

5 × 200398

10 × 100199

11 × 91090

22 × 45545

55 × 18218

110 × 9109

First multiples

1,001,990 · 2,003,980 (double) · 3,005,970 · 4,007,960 · 5,009,950 · 6,011,940 · 7,013,930 · 8,015,920 · 9,017,910 · 10,019,900

Sums & aliquot sequence

As consecutive integers: 250,496 + 250,497 + 250,498 + 250,499 200,396 + 200,397 + 200,398 + 200,399 + 200,400 91,085 + 91,086 + … + 91,095 50,090 + 50,091 + … + 50,109

Aliquot sequence: 1,001,990 → 965,770 → 1,211,510 → 969,226 → 484,616 → 506,824 → 443,486 → 275,362 → 141,230 → 122,290 → 129,422 → 66,394 → 34,586 → 17,296 → 18,416 → 17,296 — enters a cycle

Continued fraction of √n

√1,001,990 = [1000; (1, 180, 1, 2000)]

Period length 4 — the block in parentheses repeats forever.

Representations

In words: one million one thousand nine hundred ninety
Ordinal: 1001990th
Binary: 11110100101000000110
Octal: 3645006
Hexadecimal: 0xF4A06
Base64: D0oG
One's complement: 4,293,965,305 (32-bit)
Scientific notation: 1.00199 × 10⁶
As a duration: 1,001,990 s = 11 days, 14 hours, 19 minutes, 50 seconds

In other bases

ternary (3) 1212220110202

quaternary (4) 3310220012

quinary (5) 224030430

senary (6) 33250502

septenary (7) 11342153

nonary (9) 1786422

undecimal (11) 6248a0

duodecimal (12) 403a32

tridecimal (13) 2910c2

tetradecimal (14) 1c122a

pentadecimal (15) 14bd45

As an angle

1,001,990° = 2,783 × 360° + 110°

110° ≈ 1.92 rad

Compass bearing: ESE (east-southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
Egyptian hieroglyphic: 𓁨𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
Chinese: 一百萬一千九百九十
Chinese (financial): 壹佰萬壹仟玖佰玖拾

In other modern scripts

Eastern Arabic ١٠٠١٩٩٠ Devanagari १००१९९० Bengali ১০০১৯৯০ Tamil ௧௦௦௧௯௯௦ Thai ๑๐๐๑๙๙๐ Tibetan ༡༠༠༡༩༩༠ Khmer ១០០១៩៩០ Lao ໑໐໐໑໙໙໐ Burmese ၁၀၀၁၉၉၀

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1001990, here are decompositions:

7 + 1001983 = 1001990
13 + 1001977 = 1001990
37 + 1001953 = 1001990
43 + 1001947 = 1001990
79 + 1001911 = 1001990
151 + 1001839 = 1001990
181 + 1001809 = 1001990
193 + 1001797 = 1001990

Showing the first eight; more decompositions exist.

Hex color

#0F4A06

RGB(15, 74, 6)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.74.6.

Address: 0.15.74.6
Class: reserved
IPv4-mapped IPv6: ::ffff:0.15.74.6

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 1,001,990 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 US1,001,990 on Google Patents ↗ Look up on USPTO ↗