Properties of the Number 39916

Thirty-Nine Thousand Nine Hundred Sixteen

Basics

Value: 39915 → 39916 → 39917

Parity: even

Prime: No

Previous Prime: 39901

Next Prime: 39929

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 17 × 587

Divisors: 1, 2, 4, 17, 34, 68, 587, 1174, 2348, 9979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1001101111101100

Octal: 115754

Duodecimal: 1B124

Hexadecimal: 9bec

Square: 1593287056

Square Root: 199.78988963408534

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

T(n,k)=Number of length n+1 0..k arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero. A250419

Numbers k(n) used for Cassels's Markoff forms MF(n) corresponding to the conjectured unique Markoff triples MT(n) with maximal entry m(n) = A002559(n), for n >= 1. A305310

Expansion of ∏_{i>=1, j>=0} (1 + x^{i·5^j}) / (1 - x^{i·5^j}). A393557

Row sums of triangle A076732. A193463

T(n,n-6), where T is the array in A055830. A55833

Sum of divisors of n and product of divisors of n are both perfect cubes. A244428

Numbers k such that abs(prime(k)-k*τ(k)) < sqrt(k). A68543

Numbers n such that σ(n) + σ(n+3) = σ(n+1) + σ(n+2). A76666

Maximum determinant that can be formed from the optimal set of nonnegative 3 X 3 matrix elements <=n, which maximize the number of different determinants given in A099834. A99815

Number of length n+1 0..6 arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero. A250417