13979635 has 4 divisors (see below), whose sum is σ = 16775568. Its totient is φ = 11183704.

The previous prime is 13979629. The next prime is 13979639. The reversal of 13979635 is 53697931.

It is a happy number.

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 13979635 - 2⁷ = 13979507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13979591 and 13979600.

It is not an unprimeable number, because it can be changed into a prime (13979639) 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, 1397959 + ... + 1397968.

It is an arithmetic number, because the mean of its divisors is an integer number (4193892).

Almost surely, 2^13979635 is an apocalyptic number.

13979635 is a deficient number, since it is larger than the sum of its proper divisors (2795933).

13979635 is an equidigital number, since it uses as much as digits as its factorization.

13979635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795932.

The product of its digits is 153090, while the sum is 43.

The square root of 13979635 is about 3738.9350087960. The cubic root of 13979635 is about 240.8973064993.

The spelling of 13979635 in words is "thirteen million, nine hundred seventy-nine thousand, six hundred thirty-five".