Properties of the Number 40490

Forty Thousand Four Hundred Ninety

Basics

Value: 40489 → 40490 → 40491

Parity: even

Prime: No

Previous Prime: 40487

Next Prime: 40493

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 4049

Divisors: 1, 2, 5, 10, 4049, 8098, 20245, 40490

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001111000101010

Octal: 117052

Duodecimal: 1B522

Hexadecimal: 9e2a

Square: 1639440100

Square Root: 201.2212712413874

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

Square array T(n,m) (n>=0, m>=0) read by antidiagonals downwards giving number of rooted triangulations of type [n,m] up to orientation-preserving isomorphisms. A262586

Triangulations of the disk G_n,1. A2710

G.f. A(x) satisfies 1/x = ∑_n=-oo..+oo A(x)ⁿ * (1 + A(x)^2·n+1)ⁿ⁺¹. A378830

Continued fraction for sqrt(513). A40490