13966879 has 2 divisors, whose sum is σ = 13966880. Its totient is φ = 13966878.

The previous prime is 13966847. The next prime is 13966949. The reversal of 13966879 is 97866931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13966879 - 2⁵ = 13966847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13966829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6983439 + 6983440.

It is an arithmetic number, because the mean of its divisors is an integer number (6983440).

Almost surely, 2^13966879 is an apocalyptic number.

13966879 is a deficient number, since it is larger than the sum of its proper divisors (1).

13966879 is an equidigital number, since it uses as much as digits as its factorization.

13966879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 49.

The square root of 13966879 is about 3737.2287861462. The cubic root of 13966879 is about 240.8240136664.

The spelling of 13966879 in words is "thirteen million, nine hundred sixty-six thousand, eight hundred seventy-nine".