13979508 has 72 divisors (see below), whose sum is σ = 36103200. Its totient is φ = 4204032.

The previous prime is 13979507. The next prime is 13979527. The reversal of 13979508 is 80597931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13979508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13979501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100503 + ... + 100641.

Almost surely, 2^13979508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13979508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18051600).

13979508 is an abundant number, since it is smaller than the sum of its proper divisors (22123692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13979508 is a wasteful number, since it uses less digits than its factorization.

13979508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 13979508 is about 3738.9180253116. The cubic root of 13979508 is about 240.8965770084.

The spelling of 13979508 in words is "thirteen million, nine hundred seventy-nine thousand, five hundred eight".