Properties of the Number 39986

Thirty-Nine Thousand Nine Hundred Eighty-Six

Basics

Value: 39985 → 39986 → 39987

Parity: even

Prime: No

Previous Prime: 39983

Next Prime: 39989

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 2 × 19993

Divisors: 1, 2, 19993, 39986

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000110010

Octal: 116062

Duodecimal: 1B182

Hexadecimal: 9c32

Square: 1598880196

Square Root: 199.96499693696396

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 nX5 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero. A305242

Primes such that every distinct permutation of digits is composite (including permutations with leading zeros). A39986

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero. A305245

Numbers that are a sum of a square and 2 nonnegative cubes. A22556

Numbers k such that if k = a·b, then a+b = reversal(k) for some integers a,b > 1. A161791

Triangle, read by rows, T(n, k) = binomial(n-1,k-1)*n!/k! + binomial(n-1, n-k)* n!/(n-k+1)! - n!. A169660