Properties of the Number 9908

Nine Thousand Nine Hundred Eight

Basics

Value: 9907 → 9908 → 9909

Parity: even

Prime: No

Previous Prime: 9907

Next Prime: 9923

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 2477

Divisors: 1, 2, 4, 2477, 4954, 9908

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011010110100

Octal: 23264

Duodecimal: 5898

Hexadecimal: 26b4

Square: 98168464

Square Root: 99.53893710503444

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) = 2^n-1 + ((1 + (-1)ⁿ)/4)*binomial(n, n/2). A27306

a(n) = ∑_i=0..n binomial(2·n, i). A32443

Expansion of ((1 + x - 2x²) + (1+x)*sqrt(1-4x²))/(2(1-4x²)). A116406

Triangle read by rows: DX(n,d) = number of properly d-dimensional polyominoes with n cells, modulo translations (n>=1, 0 <= d <= n-1). A195739

a(n) = ∑_k=0..7 binomial(n,k). A8860

Number of times the digit 2 appears in the first 10ⁿ digits of π. A99293

T(n,k)=Number of binary arrays of length n+2·k-1 with no more than k ones in any length 2k subsequence (=50% duty cycle). A212402

a(n) = 2ⁿ - C(n,0) - C(n,1) - ... - C(n,6). A35039

Number of two-rowed partitions of length 3. A1993

Numbers that are the sum of nine fourth powers in exactly seven ways. A345849