Properties of the Number 99009

Ninety-Nine Thousand Nine

Basics

Value: 99008 → 99009 → 99010

Parity: odd

Prime: No

Previous Prime: 98999

Next Prime: 99013

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 19 × 193

Divisors: 1, 3, 9, 19, 27, 57, 171, 193, 513, 579

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000001011000001

Octal: 301301

Duodecimal: 49369

Hexadecimal: 182c1

Square: 9802782081

Square Root: 314.65695606485485

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

a(n) = ∑_k=0..n C(n-k,4·k). A5676

Smallest multiple of n using only digits 0 and 9. A78248

Numbers whose set of base 10 digits is {0,9}. A97256

a(n) = ∑_{k=0..floor(n/2)} binomial(k,2*(n-2·k)). A392250

a(n) = (16/3)*(n+1)*n*(n-1) + 8·n² + 1. A212668

Number of compositions of 5·n-1 into parts 4 and 5. A369849

Principal diagonal of the convolution array A212891. A213436

Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section. A278457

Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 3,0,1. A37650

Fixed points of the Kaprekar mapping f(n) = n' - n'', where in n' the digits of n are arranged in descending, in n'' in ascending order. A99009