Properties of the Number 39641

Thirty-Nine Thousand Six Hundred Forty-One

Basics

Value: 39640 → 39641 → 39642

Parity: odd

Prime: No

Previous Prime: 39631

Next Prime: 39659

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 7 ² × 809

Divisors: 1, 7, 49, 809, 5663, 39641

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001101011011001

Octal: 115331

Duodecimal: 1AB35

Hexadecimal: 9ad9

Square: 1571408881

Square Root: 199.1004771465905

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

E.g.f. A(x) satisfies A(x) = exp( x·A(x·A(x))² ). A384719

Numbers n such that the trinomial xⁿ-x-1 is irreducible over GF(3). A223938

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384719. A384721

Fixed point of "k -> k/2 or (k+1)/2 until result is prime", starting with prime(n)+1. A39641