Properties of the Number 40090

Forty Thousand Ninety

Basics

Value: 40089 → 40090 → 40091

Parity: even

Prime: No

Previous Prime: 40087

Next Prime: 40093

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 19 × 211

Divisors: 1, 2, 5, 10, 19, 38, 95, 190, 211, 422

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110010011010

Octal: 116232

Duodecimal: 1B24A

Hexadecimal: 9c9a

Square: 1607208100

Square Root: 200.2248735796829

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 k such that k!3 - 3² is prime, where k!3 = k!!! is a triple factorial number (A007661). A243078

Numbers n such that prime(n) == -7 (mod n). A92049

Let G_n denote the planar graph defined in A358746 with the addition, if n is odd, of the circle containing the initial n points; sequence gives the number of regions in G_n. A370976

Occurrences of most frequently occurring number in 1-to-n 5-dimensional multiplication table. A57344

Numbers k such that k divides prime(k) + prime(k+1). A66895

Numbers k that divide the average of prime(k) and prime(k+1). A66706

(1/4)*number of nonsquare rectangles with corners on an n X n grid of points. A122225

Numbers k such that prime(k+1)² == prime(k)² (mod k). A67783

Numbers k such that prime(k + 1) == 7 (mod k). A105421

Expansion of x*(1+2·x+8·x²+4·x³+3·x⁴) / ( (1+x)²*(x-1)⁴ ). A178947