Properties of the Number 39450

Thirty-Nine Thousand Four Hundred Fifty

Basics

Value: 39449 → 39450 → 39451

Parity: even

Prime: No

Previous Prime: 39443

Next Prime: 39451

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 ² × 263

Divisors: 1, 2, 3, 5, 6, 10, 15, 25, 30, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001101000011010

Octal: 115032

Duodecimal: 1A9B6

Hexadecimal: 9a1a

Square: 1556302500

Square Root: 198.62024066041204

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 (n+1)X(k+1) 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors. A205736

O.g.f.: exp( ∑_n>=1 -(σ(2·n²) - σ(n²)) * (-x)ⁿ/n ). A215603

a(n) = ∑_{k=0..floor(n/3)} (-1)^k * (4·k+1) * binomial(3·n-5·k+1,n-3·k)/(3·n-5·k+1). A390517

a(n) is the number of edges formed by n-secting the angles of a decagon. A335802

Values of n such that N=(an+1)(bn+1)(cn+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,33. A64253

Number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors. A205731

Number of 5X(n+1) 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors. A205740

Number of (n+4) X 8 0..2 matrices with each 5 X 5 subblock idempotent. A224621

Number of (n+4) X 11 0..2 matrices with each 5 X 5 subblock idempotent. A224624

Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A259004