Properties of the Number 40049

Forty Thousand Forty-Nine

Basics

Value: 40048 → 40049 → 40050

Parity: odd

Prime: No

Previous Prime: 40039

Next Prime: 40063

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 29 × 1381

Divisors: 1, 29, 1381, 40049

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110001110001

Octal: 116161

Duodecimal: 1B215

Hexadecimal: 9c71

Square: 1603922401

Square Root: 200.12246250733574

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

Numbers k such that (2·k)!/(2*(k!)²) - 1 is prime. A112861

Least number having exactly two odd prime factors that differ by 2·n². A190052

Expansion of 1/(1-2·x²-3·x³). A2447

Numbers k such that the continued fraction for sqrt(k) has period 97. A20436

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 57. A31645

Smallest k such that τ(k)=reversal(k-n). A241474

Numbers with three or more digits such that every three consecutive digits are a nonzero square. A365820

Primes p such that x³ = 7 has a solution mod p. A40049

Number of n X 4 0..1 arrays with every element equal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero. A297974