13408679 has 2 divisors, whose sum is σ = 13408680. Its totient is φ = 13408678.

The previous prime is 13408669. The next prime is 13408687. The reversal of 13408679 is 97680431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13408679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13408639) 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, 6704339 + 6704340.

It is an arithmetic number, because the mean of its divisors is an integer number (6704340).

Almost surely, 2^13408679 is an apocalyptic number.

13408679 is a deficient number, since it is larger than the sum of its proper divisors (1).

13408679 is an equidigital number, since it uses as much as digits as its factorization.

13408679 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 13408679 is about 3661.7863127168. The cubic root of 13408679 is about 237.5720424106.

The spelling of 13408679 in words is "thirteen million, four hundred eight thousand, six hundred seventy-nine".