9,880
9,880 is a composite number, even.
9,880 (nine thousand eight hundred eighty) is an even 4-digit number. It is a composite number with 32 divisors, and factors as 2³ × 5 × 13 × 19. Its proper divisors sum to 15,320, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2698.
Interestingness
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 25
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 889
- Flips to (rotate 180°)
- 886
- Recamán's sequence
- a(7,747) = 9,880
- Square (n²)
- 97,614,400
- Cube (n³)
- 964,430,272,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 25,200
- φ(n) — Euler's totient
- 3,456
- Sum of prime factors
- 43
Primality
Prime factorization: 2 3 × 5 × 13 × 19
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√9,880 = [99; (2, 1, 1, 21, 2, 21, 1, 1, 2, 198)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- nine thousand eight hundred eighty
- Ordinal
- 9880th
- Binary
- 10011010011000
- Octal
- 23230
- Hexadecimal
- 0x2698
- Base64
- Jpg=
- One's complement
- 55,655 (16-bit)
- Scientific notation
- 9.88 × 10³
- As a duration
- 9,880 s = 2 hours, 44 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵θωπʹ
- Mayan (base 20)
- 𝋡·𝋤·𝋮·𝋠
- Chinese
- 九千八百八十
- Chinese (financial)
- 玖仟捌佰捌拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 9,880 = 4
- e — Euler's number (e)
- Digit 9,880 = 9
- φ — Golden ratio (φ)
- Digit 9,880 = 1
- √2 — Pythagoras's (√2)
- Digit 9,880 = 7
- ln 2 — Natural log of 2
- Digit 9,880 = 7
- γ — Euler-Mascheroni (γ)
- Digit 9,880 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 9880, here are decompositions:
- 23 + 9857 = 9880
- 29 + 9851 = 9880
- 41 + 9839 = 9880
- 47 + 9833 = 9880
- 89 + 9791 = 9880
- 113 + 9767 = 9880
- 131 + 9749 = 9880
- 137 + 9743 = 9880
Showing the first eight; more decompositions exist.
UTF-8 encoding: E2 9A 98 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.38.152.
- Address
- 0.0.38.152
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.38.152
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 9,880 Hz is closest to:
- Concert pitch (A4 = 440 Hz): D♯9 (9956.1 Hz, -13¢)
- Scientific pitch (C4 = 256 Hz): D♯9 (9742 Hz, +24¢)
- Baroque pitch (A4 = 415 Hz): E9 (9948.8 Hz, -12¢)
The digit sequence 9880 first appears in π at position 12,447 of the decimal expansion (the 12,447ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.