13966679 has 2 divisors, whose sum is σ = 13966680. Its totient is φ = 13966678.

The previous prime is 13966669. The next prime is 13966717. The reversal of 13966679 is 97666931.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97666931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13966679 - 2⁸ = 13966423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13966669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6983339 + 6983340.

It is an arithmetic number, because the mean of its divisors is an integer number (6983340).

Almost surely, 2^13966679 is an apocalyptic number.

13966679 is a deficient number, since it is larger than the sum of its proper divisors (1).

13966679 is an equidigital number, since it uses as much as digits as its factorization.

13966679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 47.

The square root of 13966679 is about 3737.2020282559. The cubic root of 13966679 is about 240.8228641605.

The spelling of 13966679 in words is "thirteen million, nine hundred sixty-six thousand, six hundred seventy-nine".