13401679 has 2 divisors, whose sum is σ = 13401680. Its totient is φ = 13401678.

The previous prime is 13401671. The next prime is 13401719. The reversal of 13401679 is 97610431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13401679 - 2³ = 13401671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13401679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13401671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700839 + 6700840.

It is an arithmetic number, because the mean of its divisors is an integer number (6700840).

Almost surely, 2^13401679 is an apocalyptic number.

13401679 is a deficient number, since it is larger than the sum of its proper divisors (1).

13401679 is an equidigital number, since it uses as much as digits as its factorization.

13401679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 13401679 is about 3660.8303702849. The cubic root of 13401679 is about 237.5306937247.

The spelling of 13401679 in words is "thirteen million, four hundred one thousand, six hundred seventy-nine".