13985091 has 12 divisors (see below), whose sum is σ = 20315880. Its totient is φ = 9270240.

The previous prime is 13985087. The next prime is 13985093. The reversal of 13985091 is 19058931.

It is a happy number.

13985091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13985091 - 2² = 13985087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13985093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2730 + ... + 5951.

It is an arithmetic number, because the mean of its divisors is an integer number (1692990).

Almost surely, 2^13985091 is an apocalyptic number.

13985091 is a deficient number, since it is larger than the sum of its proper divisors (6330789).

13985091 is a wasteful number, since it uses less digits than its factorization.

13985091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8866 (or 8863 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 13985091 is about 3739.6645571495. The cubic root of 13985091 is about 240.9286417179.

The spelling of 13985091 in words is "thirteen million, nine hundred eighty-five thousand, ninety-one".