13165439 has 16 divisors (see below), whose sum is σ = 15544320. Its totient is φ = 10916640.

The previous prime is 13165417. The next prime is 13165441. The reversal of 13165439 is 93456131.

It is a de Polignac number, because none of the positive numbers 2^k-13165439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13165489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57377 + ... + 57605.

It is an arithmetic number, because the mean of its divisors is an integer number (971520).

Almost surely, 2^13165439 is an apocalyptic number.

13165439 is a deficient number, since it is larger than the sum of its proper divisors (2378881).

13165439 is a wasteful number, since it uses less digits than its factorization.

13165439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470.

The product of its digits is 9720, while the sum is 32.

The square root of 13165439 is about 3628.4210064434. The cubic root of 13165439 is about 236.1267094634.

The spelling of 13165439 in words is "thirteen million, one hundred sixty-five thousand, four hundred thirty-nine".