990,450
990,450 is a composite number, even.
990,450 (nine hundred ninety thousand four hundred fifty) is an even 6-digit number. It is a composite number with 72 divisors, and factors as 2 × 3² × 5² × 31 × 71. Its proper divisors sum to 1,795,086, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF1CF2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 54,099
- Square (n²)
- 980,991,202,500
- Cube (n³)
- 971,622,736,516,125,000
- Divisor count
- 72
- σ(n) — sum of divisors
- 2,785,536
- φ(n) — Euler's totient
- 252,000
- Sum of prime factors
- 120
Primality
Prime factorization: 2 × 3 2 × 5 2 × 31 × 71
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√990,450 = [995; (4, 1, 2, 6, 1, 1, 7, 1, 3, 1, 4, 79, 2, 2, 4, 3, 1, 1, 6, 1, 1, 3, 4, 2, …)]
Period length 38 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety thousand four hundred fifty
- Ordinal
- 990450th
- Binary
- 11110001110011110010
- Octal
- 3616362
- Hexadecimal
- 0xF1CF2
- Base64
- Dxzy
- One's complement
- 4,293,976,845 (32-bit)
- Scientific notation
- 9.9045 × 10⁵
- As a duration
- 990,450 s = 11 days, 11 hours, 7 minutes, 30 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ϡϟυνʹ
- Chinese
- 九十九萬零四百五十
- Chinese (financial)
- 玖拾玖萬零肆佰伍拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 990450, here are decompositions:
- 53 + 990397 = 990450
- 61 + 990389 = 990450
- 67 + 990383 = 990450
- 73 + 990377 = 990450
- 79 + 990371 = 990450
- 89 + 990361 = 990450
- 101 + 990349 = 990450
- 127 + 990323 = 990450
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.28.242.
- Address
- 0.15.28.242
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.28.242
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 990,450 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 990450 first appears in π at position 224,821 of the decimal expansion (the 224,821ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.