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Properties of the Number 39409

Thirty-Nine Thousand Four Hundred Nine

Basics

Value: 39408 → 39409 → 39410

Parity: odd

Prime: Yes

Previous Prime: 39397

Next Prime: 39419

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 39409

Divisors: 1, 39409

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001100111110001

Octal: 114761

Duodecimal: 1A981

Hexadecimal: 99f1

Square: 1553069281

Square Root: 198.5170017907786

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

Least prime p such that B2·n == 0 (mod p) but there is no k < n with B2k == 0 (mod p), or 1 if such a prime p does not exist, where Bm denotes the m-th Bernoulli number. A242193
Least prime divisor of the n-th tangent number Tn which does not divide any Tk with k < n, or 1 if such a primitive prime divisor of Tn does not exist. A242195
Primes in A301916 but not in A045318. A320481
The least prime factor of the numerator of Bernoulli(2·n), or 1 if the numerator is 1. A332300
Convolution of positive integers n with Lucas numbers L(k)(A000032) for k >= 4. A33814
Primes p giving prime quadruples (30p+11, 30p+13, 30p+17, 30p+19). A87771
Positive numbers y such that y2 is of the form x2+(x+2401)2 with integer x. A157247
Smallest prime factor of |A001067(n)|, or 1 if |A001067(n)| = 1. A281331
Numbers k such that (17·10k + 31)/3 is prime. A280381
Number of 6Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 6Xn array. A219777