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Properties of the Number 69940

Sixty-Nine Thousand Nine Hundred Forty

Basics

Value: 69939 → 69940 → 69941

Parity: even

Prime: No

Previous Prime: 69931

Next Prime: 69941

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 2 × 5 × 13 × 269

Divisors: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001000100110100

Octal: 210464

Duodecimal: 34584

Hexadecimal: 11134

Square: 4891603600

Square Root: 264.4617174564213

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

9-gonal (or enneagonal) pyramidal numbers: a(n) = n*(n+1)*(7·n-4)/6. A7584
Structured meta-anti-prism numbers, the n-th number from a structured n-gonal anti-prism number sequence. A100185
Numbers k such that 7·2k - 3 is prime. A58593
Numbers whose base-4 representation has exactly 9 runs. A43600
Numbers k such that number of runs in the base 4 representation of k is congruent to 0 mod 9. A43858
Numbers k such that number of runs in the base 4 representation of k is congruent to 9 mod 10. A43876
Number of alternating separable permutations. A121703
Even 9-gonal (nonagonal) pyramidal numbers. A218329
Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1), U=(1,2), or d=(1,-1) and having abscissa of first return equal to 3k. A108439
Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1) and having height of last peak equal to k. A109158