Properties of the Number 12949

Twelve Thousand Nine Hundred Forty-Nine

Basics

Value: 12948 → 12949 → 12950

Parity: odd

Prime: No

Previous Prime: 12941

Next Prime: 12953

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 23 × 563

Divisors: 1, 23, 563, 12949

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001010010101

Octal: 31225

Duodecimal: 75B1

Hexadecimal: 3295

Square: 167676601

Square Root: 113.79367293483412

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 k such that 8^k starts with k. A362100

a(n) = 8·n² + 20·n + 1. A161617

Numbers k such that 13k = 6j² + 6j + 1. A106390

Number of compositions of n into powers of 3 and doubled powers of 3. A235684

Inverse Moebius transform of A001405 (binomial(n, floor(n/2))). A62798

Odd numbers k such that φ(k) and cototient(k) have the same prime signature. A280927

Expansion of -1/(1 - x)² + (1/(1 - x))*∏_k>=1 (1 + x^k). A317910

Semiprimes k such that none of k-2, k-1, k+1, and k+2 is squarefree. A364010

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 56 ones. A31824

Number of degree-n permutations such that number of cycles of size 2k is even (or zero) and number of cycles of size 2k-1 is odd (or zero), for every k. A131526