13388986 has 16 divisors (see below), whose sum is σ = 21799008. Its totient is φ = 6130800.

The previous prime is 13388959. The next prime is 13388987. The reversal of 13388986 is 68988331.

13388986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13388986² = 358529892216392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13388987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1441 + ... + 5371.

It is an arithmetic number, because the mean of its divisors is an integer number (1362438).

Almost surely, 2^13388986 is an apocalyptic number.

13388986 is a deficient number, since it is larger than the sum of its proper divisors (8410022).

13388986 is a wasteful number, since it uses less digits than its factorization.

13388986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077.

The product of its digits is 248832, while the sum is 46.

The square root of 13388986 is about 3659.0963365290. The cubic root of 13388986 is about 237.4556800033.

The spelling of 13388986 in words is "thirteen million, three hundred eighty-eight thousand, nine hundred eighty-six".