Properties of the Number 40408

Forty Thousand Four Hundred Eight

Basics

Value: 40407 → 40408 → 40409

Parity: even

Prime: No

Previous Prime: 40387

Next Prime: 40423

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 5051

Divisors: 1, 2, 4, 8, 5051, 10102, 20204, 40408

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110111011000

Octal: 116730

Duodecimal: 1B474

Hexadecimal: 9dd8

Square: 1632806464

Square Root: 201.0174121811342

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

L.g.f.: ∑_n>=1 (xⁿ/n) * ∏_d∣n (1 + n·x^d/d). A205477

Pentanacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) + a(n-5), starting 1,0,0,0,1. A124313

a(n) = (n⁵ + 145·n⁴ + 905·n³ + 155·n² + 594·n + 120)/120. A143060

Numbers k such that k⁸¹⁹² + (k+1)⁸¹⁹² is prime. A274237

Smallest sequence which lists the position of digits "3" in the sequence. A167453

Number of length 3 0..n arrays with each partial sum starting from the beginning no more than sqrt(3) standard deviations from its mean. A244942

White to move: King, Knight and Bishop vs. King: Number of positions with mate in n. A274683

Number of regular elements in the semigroup of all binary relations on [n]. A354279

Number of odd composites <= 10ⁿ. A344656

Continued fraction for sqrt(429). A40408