Properties of the Number 39005

Thirty-Nine Thousand Five

Basics

Value: 39004 → 39005 → 39006

Parity: odd

Prime: No

Previous Prime: 38993

Next Prime: 39019

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 29 × 269

Divisors: 1, 5, 29, 145, 269, 1345, 7801, 39005

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001100001011101

Octal: 114135

Duodecimal: 1A6A5

Hexadecimal: 985d

Square: 1521390025

Square Root: 197.4968354176846

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

Array read by antidiagonals of a(n) = a(n-1)*k-((k-1)/(kⁿ)) where a(0)=1 and k=(sqrt(x²+1)+x)² for integers x>=1. A188647

Denominators of continued fraction convergents to sqrt(50). A41085

a(n) = n⁴ + 3·n² + 1. A57721

Numbers k such that k² is palindromic in base 14. A30072

Pell equation solutions (7·b(n))² - 2*(5·a(n))² = -1 with b(n) = A097732(n), n >= 0. Note that D = 50 = 2·5² is not squarefree. A97733

Expansion of 1/( ∏_k=0..7 (1 - (8·k+1) * x) )^1/8. A383631

Square array A(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of g.f. x/(1 - A002203(k)*x + (-1)^k*x²). A383742

Denominators of continued fraction convergents to sqrt(200). A41371

Denominators of continued fraction convergents to sqrt(450). A41857

Denominators of continued fraction convergents to sqrt(800). A42543