Properties of the Number 39404

Thirty-Nine Thousand Four Hundred Four

Basics

Value: 39403 → 39404 → 39405

Parity: even

Prime: No

Previous Prime: 39397

Next Prime: 39409

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 9851

Divisors: 1, 2, 4, 9851, 19702, 39404

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001100111101100

Octal: 114754

Duodecimal: 1A978

Hexadecimal: 99ec

Square: 1552675216

Square Root: 198.50440801150992

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

G.f. A(x) satisfies: A(x) = ∑_n>=0 (3 + x·A(x)ⁿ)ⁿ / 4ⁿ⁺¹. A302104

a(n) = ((sqrt(5) + 3)ⁿ + (-sqrt(5) -1)ⁿ + (-sqrt(5) + 3)ⁿ + (sqrt(5) - 1)ⁿ) / 2ⁿ. A215500

a(n) = A142585(n) + A142586(n). A142710

Expansion of 1 / ((1-x)³ - x)². A392578

Numbers whose base-10 representation has the same nonzero number of 1's and 4's. A39404