990,402
990,402 is a composite number, even.
990,402 (nine hundred ninety thousand four hundred two) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 3 × 7 × 23,581. Its proper divisors sum to 1,273,470, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF1CC2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 204,099
- Square (n²)
- 980,896,121,604
- Cube (n³)
- 971,481,480,628,844,808
- Divisor count
- 16
- σ(n) — sum of divisors
- 2,263,872
- φ(n) — Euler's totient
- 282,960
- Sum of prime factors
- 23,593
Primality
Prime factorization: 2 × 3 × 7 × 23581
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√990,402 = [995; (5, 3, 1, 1, 2, 2, 9, 1, 5, 3, 2, 1, 2, 5, 3, 1, 31, 2, 1, 12, 1, 1, 21, 1, …)]
Representations
- In words
- nine hundred ninety thousand four hundred two
- Ordinal
- 990402nd
- Binary
- 11110001110011000010
- Octal
- 3616302
- Hexadecimal
- 0xF1CC2
- Base64
- DxzC
- One's complement
- 4,293,976,893 (32-bit)
- Scientific notation
- 9.90402 × 10⁵
- As a duration
- 990,402 s = 11 days, 11 hours, 6 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓏺𓏺
- Greek (Milesian)
- ͵ϡϟυβʹ
- Chinese
- 九十九萬零四百零二
- Chinese (financial)
- 玖拾玖萬零肆佰零貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 990402, here are decompositions:
- 5 + 990397 = 990402
- 13 + 990389 = 990402
- 19 + 990383 = 990402
- 31 + 990371 = 990402
- 41 + 990361 = 990402
- 43 + 990359 = 990402
- 53 + 990349 = 990402
- 71 + 990331 = 990402
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.28.194.
- Address
- 0.15.28.194
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.28.194
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 990,402 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 990402 first appears in π at position 508,630 of the decimal expansion (the 508,630ordinal-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°.