13390879 has 4 divisors (see below), whose sum is σ = 13402080. Its totient is φ = 13379680.

The previous prime is 13390873. The next prime is 13390907. The reversal of 13390879 is 97809331.

13390879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13390879 - 2⁹ = 13390367 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13390873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3559 + ... + 6280.

It is an arithmetic number, because the mean of its divisors is an integer number (3350520).

Almost surely, 2^13390879 is an apocalyptic number.

13390879 is a deficient number, since it is larger than the sum of its proper divisors (11201).

13390879 is an equidigital number, since it uses as much as digits as its factorization.

13390879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 13390879 is about 3659.3549978104. The cubic root of 13390879 is about 237.4668703558.

The spelling of 13390879 in words is "thirteen million, three hundred ninety thousand, eight hundred seventy-nine".