Properties of the Number 39880

Thirty-Nine Thousand Eight Hundred Eighty

Basics

Value: 39879 → 39880 → 39881

Parity: even

Prime: No

Previous Prime: 39877

Next Prime: 39883

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 5 × 997

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 997, 1994

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101111001000

Octal: 115710

Duodecimal: 1B0B4

Hexadecimal: 9bc8

Square: 1590414400

Square Root: 199.69977466186586

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 5 positive 9th powers. A3394

Coefficients of Jacobi cusp form of index 1 and weight 10. A3784

Sum of the 9th powers of the numbers of standard Young tableaux over all partitions of n. A218436

Numbers that are the sum of at most 5 positive 9th powers. A4889

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 507", based on the 5-celled von Neumann neighborhood. A272587

a(n) = ∑_k=0..n binomial(n,k)³ * k! * (-n)^n-k. A354944

Numbers k such that 3·10^k + 89 is prime. A276642

Triangle T(n,k), read by rows, given by (2, 1/2, -1/2, 0, 0, 0, 0, 0, 0, 0, ...) δ (2, -1/2, -1/2, 0, 0, 0, 0, 0, 0, 0, ...) where δ is the operator defined in A084938. A210637

Number of length n+2 0..5 arrays with the medians of every three consecutive terms nondecreasing. A250137

Number of partitions satisfying cn(0,5) + cn(1,5) + cn(4,5) < cn(2,5) + cn(3,5). A39880