Properties of the Number 39890

Thirty-Nine Thousand Eight Hundred Ninety

Basics

Value: 39889 → 39890 → 39891

Parity: even

Prime: No

Previous Prime: 39887

Next Prime: 39901

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 3989

Divisors: 1, 2, 5, 10, 3989, 7978, 19945, 39890

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001101111010010

Octal: 115722

Duodecimal: 1B102

Hexadecimal: 9bd2

Square: 1591212100

Square Root: 199.7248106770914

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

Numbers that are the sum of six fourth powers in exactly five ways. A345817

a(n) = ∑_k=1..n-1 sigma₃(k)*sigma₇(n-k). A279964

Poincaré series for invariant polynomial functions on the space of binary forms of degree 14. A293939

Number of partitions satisfying cn(1,5) <= cn(2,5) + cn(3,5) and cn(4,5) <= cn(2,5) + cn(3,5). A39890