13447986 has 32 divisors (see below), whose sum is σ = 29403648. Its totient is φ = 4081920.

The previous prime is 13447963. The next prime is 13447997. The reversal of 13447986 is 68974431.

13447986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (918864).

Almost surely, 2^13447986 is an apocalyptic number.

13447986 is an abundant number, since it is smaller than the sum of its proper divisors (15955662).

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

13447986 is a wasteful number, since it uses less digits than its factorization.

13447986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306.

The product of its digits is 145152, while the sum is 42.

The square root of 13447986 is about 3667.1495742606. The cubic root of 13447986 is about 237.8039602157.

The spelling of 13447986 in words is "thirteen million, four hundred forty-seven thousand, nine hundred eighty-six".