13040879 has 4 divisors (see below), whose sum is σ = 13078176. Its totient is φ = 13003584.

The previous prime is 13040873. The next prime is 13040899. The reversal of 13040879 is 97804031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97804031 = 13 ⋅7523387.

It is a cyclic number.

It is not a de Polignac number, because 13040879 - 2⁸ = 13040623 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 (13040873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18119 + ... + 18824.

It is an arithmetic number, because the mean of its divisors is an integer number (3269544).

Almost surely, 2^13040879 is an apocalyptic number.

13040879 is a deficient number, since it is larger than the sum of its proper divisors (37297).

13040879 is an equidigital number, since it uses as much as digits as its factorization.

13040879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37296.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13040879 is about 3611.2157232710. The cubic root of 13040879 is about 235.3796729647.

The spelling of 13040879 in words is "thirteen million, forty thousand, eight hundred seventy-nine".