13388979 has 16 divisors (see below), whose sum is σ = 19135872. Its totient is φ = 8297088.

The previous prime is 13388959. The next prime is 13388987. The reversal of 13388979 is 97988331.

13388979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13388979 - 2¹¹ = 13386931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13388959) 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, 2652 + ... + 5814.

It is an arithmetic number, because the mean of its divisors is an integer number (1195992).

Almost surely, 2^13388979 is an apocalyptic number.

13388979 is a deficient number, since it is larger than the sum of its proper divisors (5746893).

13388979 is a wasteful number, since it uses less digits than its factorization.

13388979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266.

The product of its digits is 326592, while the sum is 48.

The square root of 13388979 is about 3659.0953800086. The cubic root of 13388979 is about 237.4556386212.

The spelling of 13388979 in words is "thirteen million, three hundred eighty-eight thousand, nine hundred seventy-nine".