Properties of the Number 39897

Thirty-Nine Thousand Eight Hundred Ninety-Seven

Basics

Value: 39896 → 39897 → 39898

Parity: odd

Prime: No

Previous Prime: 39887

Next Prime: 39901

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11 × 13 × 31

Divisors: 1, 3, 9, 11, 13, 31, 33, 39, 93, 99

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101111011001

Octal: 115731

Duodecimal: 1B109

Hexadecimal: 9bd9

Square: 1591770609

Square Root: 199.74233402060767

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

Number of integer partitions of n that have an even number of parts and cannot be partitioned into distinct pairs of not necessarily distinct parts. A338915

-3-Knödel numbers. A225507

Column of Motzkin triangle. A5325

Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges in which the leftmost leaf is at level k. A101409

Number of base 17 circular n-digit numbers with adjacent digits differing by 9 or less. A125474

Irregular triangle read by rows: T(n,m) = number of lattice paths of type A^Q terminating at point (n, m). A291083

Expansion of g.f. A(x) satisfying A(x) = A( x³ + 3·A(x)⁴ )^1/3, with A(0)=0, A'(0)=1. A370441

Least composite k such that the concatenation of n consecutive composites, starting from k, is a prime. A281684

Number of partitions satisfying 0 < cn(2,5) + cn(3,5). A39897