Properties of the Number 40649

Forty Thousand Six Hundred Forty-Nine

Basics

Value: 40648 → 40649 → 40650

Parity: odd

Prime: No

Previous Prime: 40639

Next Prime: 40693

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 7 × 5807

Divisors: 1, 7, 5807, 40649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001111011001001

Octal: 117311

Duodecimal: 1B635

Hexadecimal: 9ec9

Square: 1652341201

Square Root: 201.6159715895544

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 n such that φ(reverse(n)) = σ(n). A70835

Number of n-step self-avoiding walks on the half-Manhattan square lattice. A336724

Smallest k such that 39^k mod k = n. A178200

Number of length 5+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third. A248438

[ (φ + sqrt(φ))ⁿ ], φ = (1+sqrt(5))/2. A50242

Matrix inverse of A008459 (squares of entries of Pascal's triangle). A55133

Continued fraction for sqrt(675). A40649