Properties of the Number 40399

Forty Thousand Three Hundred Ninety-Nine

Basics

Value: 40398 → 40399 → 40400

Parity: odd

Prime: No

Previous Prime: 40387

Next Prime: 40423

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 71 × 569

Divisors: 1, 71, 569, 40399

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110111001111

Octal: 116717

Duodecimal: 1B467

Hexadecimal: 9dcf

Square: 1632079201

Square Root: 200.99502481404858

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

Number of n-step spirals on hexagonal lattice. A6777

8-digit numbers (padded with leading zeros where necessary) in which the sum of the number consisting of the first four digits and the number consisting of the last four digits equals the number consisting of the middle four digits. A293686

Number of 0..5 arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo 6. A200665

T(n,k)=Number of 0..k arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo (k+1). A200668

Continued fraction for sqrt(420). A40399