Properties of the Number 13940

Thirteen Thousand Nine Hundred Forty

Basics

Value: 13939 → 13940 → 13941

Parity: even

Prime: No

Previous Prime: 13933

Next Prime: 13963

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 × 17 × 41

Divisors: 1, 2, 4, 5, 10, 17, 20, 34, 41, 68

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11011001110100

Octal: 33164

Duodecimal: 8098

Hexadecimal: 3674

Square: 194323600

Square Root: 118.06777714516353

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 k² divides 21^k-1. A128401

Numbers k such that k³ divides 3^k² - 1. A129211

a(n) = ∑_k=1..n lcm(n,k). A51193

Number of (1,0) steps in all peakless Motzkin paths of length n (can be easily translated into RNA secondary structure terminology). A110236

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1. A255027

Number of 4-block ordered tricoverings of an unlabeled n-set. A60488

Expansion of 1 / ((1-x)²*(1-x²)*(1-x³)*...*(1-x¹⁰)). A288345

a(n) = coefficient of xⁿ*yⁿ in ∏_n>=1 (1 - (xⁿ + yⁿ)). A322213

dot product (n,n-1,...2,1).(3,4,...,n,1,2). A26054

(A178476(n)-3)/9. A178486