Properties of the Number 39606

Thirty-Nine Thousand Six Hundred Six

Basics

Value: 39605 → 39606 → 39607

Parity: even

Prime: No

Previous Prime: 39581

Next Prime: 39607

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 7 × 23 × 41

Divisors: 1, 2, 3, 6, 7, 14, 21, 23, 41, 42

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101010110110

Octal: 115266

Duodecimal: 1AB06

Hexadecimal: 9ab6

Square: 1568635236

Square Root: 199.01256241755192

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

The number of vertices formed when every pair of n points, placed at the vertices of a regular n-gon, are connected by a circle and where the points lie at the ends of the circle's diameter. A358746

Numbers k such that 6·R_k + 1 is a prime, where R_k = 11...1 is the repunit (A002275) of length k. A96507

Partial sums of A140091. A267370

Number of forests of different trees. A35055

a(n) = L(n)² - 5*(-1)ⁿ = L(n+1)*L(n-1), where L = A000032. A292696

Numbers that can be written as the sum of four or more consecutive squares in more than one way. A307937

a(n) = Lucas(4·n+2) + 3, or Lucas(2·n)*Lucas(2·n+2). A81077

Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 2 X 2 which is symmetric after a rotation by 180 degrees. A123819

a(n) is the smallest number which can be represented as the sum of n distinct centered n-gonal numbers in exactly n ways, or -1 if no such number exists. A352975

a(n) = Lucas(n) + 3. A366506