13406879 has 2 divisors, whose sum is σ = 13406880. Its totient is φ = 13406878.

The previous prime is 13406843. The next prime is 13406909. The reversal of 13406879 is 97860431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13406879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13406819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6703439 + 6703440.

It is an arithmetic number, because the mean of its divisors is an integer number (6703440).

Almost surely, 2^13406879 is an apocalyptic number.

13406879 is a deficient number, since it is larger than the sum of its proper divisors (1).

13406879 is an equidigital number, since it uses as much as digits as its factorization.

13406879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13406879 is about 3661.5405227855. The cubic root of 13406879 is about 237.5614112661.

The spelling of 13406879 in words is "thirteen million, four hundred six thousand, eight hundred seventy-nine".