Properties of the Number 9979

Nine Thousand Nine Hundred Seventy-Nine

Basics

Value: 9978 → 9979 → 9980

Parity: odd

Prime: No

Previous Prime: 9973

Next Prime: 10007

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 17 × 587

Divisors: 1, 17, 587, 9979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011011111011

Octal: 23373

Duodecimal: 5937

Hexadecimal: 26fb

Square: 99580441

Square Root: 99.89494481704267

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers in which 9 outnumbers all other digits together. A292739

Numbers with rounded up arithmetic mean of digits = 9. A178369

Molien series for invariants of finite Coxeter group D₁₂ (bisected). A266775

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise. A236082

Numerators of continued fraction convergents to sqrt(14). A41020

Total number of nodes summed over all lattice paths from (0,0) to (n,n) that consist of steps (h,v) with min(h,v) > 0 and gcd(h,v) = 1. A308112

Numerators of continued fraction convergents to sqrt(126). A41228

Numerators of continued fraction convergents to sqrt(686). A42318

Denominators of continued fraction convergents to sqrt(884). A42709

Numbers n such that the Collatz iterations for n and n + 1 have the same length (A078417) but do not meet a certain condition. (See comments.) A274410