999,120
999,120 is a composite number, even.
999,120 (nine hundred ninety-nine thousand one hundred twenty) is an even 6-digit number. It is a composite number with 80 divisors, and factors as 2⁴ × 3 × 5 × 23 × 181. Its proper divisors sum to 2,250,672, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF3ED0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 30
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 21,999
- Square (n²)
- 998,240,774,400
- Cube (n³)
- 997,362,322,518,528,000
- Divisor count
- 80
- σ(n) — sum of divisors
- 3,249,792
- φ(n) — Euler's totient
- 253,440
- Sum of prime factors
- 220
Primality
Prime factorization: 2 4 × 3 × 5 × 23 × 181
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√999,120 = [999; (1, 1, 3, 1, 2, 16, 6, 5, 2, 1, 2, 6, 1, 1, 5, 31, 17, 1, 44, 2, 24, 2, 44, 1, …)]
Period length 42 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety-nine thousand one hundred twenty
- Ordinal
- 999120th
- Binary
- 11110011111011010000
- Octal
- 3637320
- Hexadecimal
- 0xF3ED0
- Base64
- Dz7Q
- One's complement
- 4,293,968,175 (32-bit)
- Scientific notation
- 9.9912 × 10⁵
- As a duration
- 999,120 s = 11 days, 13 hours, 32 minutes
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆
- Greek (Milesian)
- ͵ϡϟθρκʹ
- Chinese
- 九十九萬九千一百二十
- Chinese (financial)
- 玖拾玖萬玖仟壹佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 999120, here are decompositions:
- 19 + 999101 = 999120
- 29 + 999091 = 999120
- 37 + 999083 = 999120
- 53 + 999067 = 999120
- 71 + 999049 = 999120
- 97 + 999023 = 999120
- 113 + 999007 = 999120
- 131 + 998989 = 999120
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.62.208.
- Address
- 0.15.62.208
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.62.208
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 999,120 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 999120 first appears in π at position 189,674 of the decimal expansion (the 189,674ordinal-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°.