Properties of the Number 39997

Thirty-Nine Thousand Nine Hundred Ninety-Seven

Basics

Value: 39996 → 39997 → 39998

Parity: odd

Prime: No

Previous Prime: 39989

Next Prime: 40009

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 23 × 37 × 47

Divisors: 1, 23, 37, 47, 851, 1081, 1739, 39997

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000111101

Octal: 116075

Duodecimal: 1B191

Hexadecimal: 9c3d

Square: 1599760009

Square Root: 199.99249985936973

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

Antidiagonal sums of square array A082025. A82190

Positive integers that are square roots of products a*(a+d)*(a+2·d) with coprime a > 0, d >= 0. A284876

Numbers k such that 2k-1 is the digit reversal of k. A83818

Number of nondecreasing Dyck paths of semilength n and having no peaks at even level (n>=0). A nondecreasing Dyck path is a Dyck path for which the sequence of the altitudes of the valleys is nondecreasing. A121485

Numbers k such that the number of primes between k and 2k (inclusive) is equal to the number of primes between k and reverse(k) (inclusive). A74814

Composite squarefree numbers that are multiples of the root mean square of their prime factors. A255356

Number of distinct primes which occur as substrings of the digits of n. A39997

Indices of primes in sequence defined by A(0) = 37, A(n) = 10·A(n-1) + 27 for n > 0. A101849

Numbers k such that 4·10^k-3 is prime. A101398