13904579 has 4 divisors (see below), whose sum is σ = 14974176. Its totient is φ = 12834984.

The previous prime is 13904573. The next prime is 13904591. The reversal of 13904579 is 97540931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13904579 - 2⁸ = 13904323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13904573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534779 + ... + 534804.

It is an arithmetic number, because the mean of its divisors is an integer number (3743544).

Almost surely, 2^13904579 is an apocalyptic number.

13904579 is a deficient number, since it is larger than the sum of its proper divisors (1069597).

13904579 is a wasteful number, since it uses less digits than its factorization.

13904579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069596.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 13904579 is about 3728.8844176241. The cubic root of 13904579 is about 240.4654105449.

The spelling of 13904579 in words is "thirteen million, nine hundred four thousand, five hundred seventy-nine".