989,920
989,920 is a composite number, even.
989,920 (nine hundred eighty-nine thousand nine hundred twenty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 5 × 23 × 269. Its proper divisors sum to 1,459,520, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF1AE0.
Interestingness
Properties
Primality
Prime factorization: 2 5 × 5 × 23 × 269
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√989,920 = [994; (1, 17, 1, 19, 1, 3, 1, 1, 3, 1, 2, 54, 1, 10, 1, 3, 1, 4, 1, 1, 2, 9, 1, 3, …)]
Representations
- In words
- nine hundred eighty-nine thousand nine hundred twenty
- Ordinal
- 989920th
- Binary
- 11110001101011100000
- Octal
- 3615340
- Hexadecimal
- 0xF1AE0
- Base64
- Dxrg
- One's complement
- 4,293,977,375 (32-bit)
- Scientific notation
- 9.8992 × 10⁵
- As a duration
- 989,920 s = 11 days, 10 hours, 58 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ϡπθϡκʹ
- Chinese
- 九十八萬九千九百二十
- Chinese (financial)
- 玖拾捌萬玖仟玖佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 989920, here are decompositions:
- 3 + 989917 = 989920
- 11 + 989909 = 989920
- 47 + 989873 = 989920
- 83 + 989837 = 989920
- 89 + 989831 = 989920
- 137 + 989783 = 989920
- 167 + 989753 = 989920
- 233 + 989687 = 989920
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.26.224.
- Address
- 0.15.26.224
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.26.224
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 989,920 and was likely granted around 1911.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 989920 first appears in π at position 870,752 of the decimal expansion (the 870,752ordinal-suffix:nd 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.