990,478
990,478 is a composite number, even.
990,478 (nine hundred ninety thousand four hundred seventy-eight) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 41 × 47 × 257. Written other ways, in hexadecimal, 0xF1D0E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 37
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 874,099
- Square (n²)
- 981,046,668,484
- Cube (n³)
- 971,705,142,106,695,352
- Divisor count
- 16
- σ(n) — sum of divisors
- 1,560,384
- φ(n) — Euler's totient
- 471,040
- Sum of prime factors
- 347
Primality
Prime factorization: 2 × 41 × 47 × 257
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√990,478 = [995; (4, 2, 1, 1, 5, 2, 63, 1, 2, 1, 85, 1, 3, 1, 4, 1, 1, 6, 3, 2, 2, 2, 2, 1, …)]
Representations
- In words
- nine hundred ninety thousand four hundred seventy-eight
- Ordinal
- 990478th
- Binary
- 11110001110100001110
- Octal
- 3616416
- Hexadecimal
- 0xF1D0E
- Base64
- Dx0O
- One's complement
- 4,293,976,817 (32-bit)
- Scientific notation
- 9.90478 × 10⁵
- As a duration
- 990,478 s = 11 days, 11 hours, 7 minutes, 58 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ϡϟυοηʹ
- Chinese
- 九十九萬零四百七十八
- Chinese (financial)
- 玖拾玖萬零肆佰柒拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 990478, here are decompositions:
- 89 + 990389 = 990478
- 101 + 990377 = 990478
- 107 + 990371 = 990478
- 149 + 990329 = 990478
- 191 + 990287 = 990478
- 197 + 990281 = 990478
- 239 + 990239 = 990478
- 479 + 989999 = 990478
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.29.14.
- Address
- 0.15.29.14
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.29.14
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 990,478 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 990478 first appears in π at position 997,676 of the decimal expansion (the 997,676ordinal-suffix:th 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°.