13439886 has 16 divisors (see below), whose sum is σ = 27321168. Its totient is φ = 4406400.

The previous prime is 13439879. The next prime is 13439891. The reversal of 13439886 is 68893431.

It is a happy number.

13439886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17995 + ... + 18726.

It is an arithmetic number, because the mean of its divisors is an integer number (1707573).

Almost surely, 2^13439886 is an apocalyptic number.

13439886 is an abundant number, since it is smaller than the sum of its proper divisors (13881282).

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

13439886 is a wasteful number, since it uses less digits than its factorization.

13439886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36787.

The product of its digits is 124416, while the sum is 42.

The square root of 13439886 is about 3666.0450079070. The cubic root of 13439886 is about 237.7562058794.

The spelling of 13439886 in words is "thirteen million, four hundred thirty-nine thousand, eight hundred eighty-six".