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998,021

998,021 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.).

998,021 (nine hundred ninety-eight thousand twenty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 61 × 16,361. Written other ways, in hexadecimal, 0xF3A85.

Arithmetic Number Cube-Free Deficient Number Odious Number Pernicious Number Semiprime Squarefree

Interestingness

Properties

Parity
Odd
Digit count
6
Digit sum
29
Digit product
0
Digital root
2
Palindrome
No
Bit width
20 bits
Reversed
120,899
Square (n²)
996,045,916,441
Cube (n³)
994,074,741,572,363,261
Divisor count
4
σ(n) — sum of divisors
1,014,444
φ(n) — Euler's totient
981,600
Sum of prime factors
16,422

Primality

Prime factorization: 61 × 16361

Nearest primes: 998,017 (−4) · 998,027 (+6)

Divisors & multiples

All divisors (4)
1 · 61 · 16361 · 998021
Aliquot sum (sum of proper divisors): 16,423
Factor pairs (a × b = 998,021)
1 × 998021
61 × 16361
First multiples
998,021 · 1,996,042 (double) · 2,994,063 · 3,992,084 · 4,990,105 · 5,988,126 · 6,986,147 · 7,984,168 · 8,982,189 · 9,980,210

Sums & aliquot sequence

As a sum of two squares: 239² + 970² = 410² + 911²
As consecutive integers: 499,010 + 499,011 16,331 + 16,332 + … + 16,391 8,120 + 8,121 + … + 8,241
Aliquot sequence: 998,021 16,423 1,505 607 1 0 — terminates at zero

Continued fraction of √n

√998,021 = [999; (99, 1, 9, 19, 1, 7, 2, 1, 15, 3, 3, 2, 6, 1, 1, 1, 2, 32, 2, 1, 1, 1, 6, 2, …)]

Period length 36 — the block in parentheses repeats forever.

Representations

In words
nine hundred ninety-eight thousand twenty-one
Ordinal
998021st
Binary
11110011101010000101
Octal
3635205
Hexadecimal
0xF3A85
Base64
DzqF
One's complement
4,293,969,274 (32-bit)
Scientific notation
9.98021 × 10⁵
As a duration
998,021 s = 11 days, 13 hours, 13 minutes, 41 seconds
In other bases
ternary (3) 1212201000202
quaternary (4) 3303222011
quinary (5) 223414041
senary (6) 33220245
septenary (7) 11324453
nonary (9) 1781022
undecimal (11) 621912
duodecimal (12) 401685
tridecimal (13) 28c35b
tetradecimal (14) 1bd9d3
pentadecimal (15) 14aa9b

As an angle

998,021° = 2,772 × 360° + 101°
101° ≈ 1.763 rad
Compass bearing: E (east)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic
𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓏺
Greek (Milesian)
͵ϡϟηκαʹ
Chinese
九十九萬八千零二十一
Chinese (financial)
玖拾玖萬捌仟零貳拾壹
In other modern scripts
Eastern Arabic ٩٩٨٠٢١ Devanagari ९९८०२१ Bengali ৯৯৮০২১ Tamil ௯௯௮௦௨௧ Thai ๙๙๘๐๒๑ Tibetan ༩༩༨༠༢༡ Khmer ៩៩៨០២១ Lao ໙໙໘໐໒໑ Burmese ၉၉၈၀၂၁

Also seen as

Hex color
#0F3A85
RGB(15, 58, 133)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.58.133.

Address
0.15.58.133
Class
reserved
IPv4-mapped IPv6
::ffff:0.15.58.133

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 998,021 and was likely granted around 1911.

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

Position in π

The digit sequence 998021 first appears in π at position 506,761 of the decimal expansion (the 506,761ordinal-suffix:st 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.

Related reading