13956679 has 4 divisors (see below), whose sum is σ = 15225480. Its totient is φ = 12687880.

The previous prime is 13956671. The next prime is 13956689. The reversal of 13956679 is 97665931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13956679 - 2³ = 13956671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13956671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634384 + ... + 634405.

It is an arithmetic number, because the mean of its divisors is an integer number (3806370).

Almost surely, 2^13956679 is an apocalyptic number.

13956679 is a deficient number, since it is larger than the sum of its proper divisors (1268801).

13956679 is a wasteful number, since it uses less digits than its factorization.

13956679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268800.

The product of its digits is 306180, while the sum is 46.

The square root of 13956679 is about 3735.8638893836. The cubic root of 13956679 is about 240.7653748645.

The spelling of 13956679 in words is "thirteen million, nine hundred fifty-six thousand, six hundred seventy-nine".