Properties of the Number 40400

Forty Thousand Four Hundred

Basics

Value: 40399 → 40400 → 40401

Parity: even

Prime: No

Previous Prime: 40387

Next Prime: 40423

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 ⁴ × 5 ² × 101

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1001110111010000

Octal: 116720

Duodecimal: 1B468

Hexadecimal: 9dd0

Square: 1632160000

Square Root: 200.9975124224178

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

a(n) = sinh(2·arcsinh(n))² = 4·n²*(n² + 1). A173116

Numbers whose decimal expansion contains only 0's and 4's. A169967

a(n) = IntegerPart(PolyGamma(n,1)). A144167

a(n) = 4*(3·n+1)*(3·n+2). A144410

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

Numbers such that each digit is the sum of two or more other digits. A203591

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

Numbers k such that k and k+1 both have more nonunitary than unitary prime divisors (A348121). A348122

Numbers k such that k and k+1 both have the same number of squarefree divisors and powerful divisors. A360904

Diagonal sums of number triangle A105522. A105524