Properties of the Number 7009

Seven Thousand Nine

Basics

Value: 7008 → 7009 → 7010

Parity: odd

Prime: No

Previous Prime: 7001

Next Prime: 7013

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 43 × 163

Divisors: 1, 43, 163, 7009

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101101100001

Octal: 15541

Duodecimal: 4081

Hexadecimal: 1b61

Square: 49126081

Square Root: 83.71977066380438

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

The number of compositions of n which cannot be viewed as stacks. A115981

Numbers k such that k¹² == 1 (mod 13³). A56086

Least nontrivial multiple of the n-th prime beginning with 7. A78291

Semiprimes in A056109. A113528

Expansion of ∏_k>=1 1/(1 - (4·k-1)*x^4·k-1). A265828

Numbers expressible as a² + k b² with nonzero integers a,b, for k=2, k=3, k=5 and k=7. A155707

Partial sums of A072272. A253908

a(n) = ∑_{k=0..floor(2·n/5)} binomial(k+1,2·n-5·k). A390020

Triangle, read by rows, such that row n equals the coefficients of x^n²+n-1+k in F(x,n) for k = 1..n, where F(x,n) = (1 + x·F(x,n))*(1 + xⁿ/F(x,n)), for n>=1. A200171

Number of compositions of 6·n-1 into parts 5 and 6. A373961