13909564 has 12 divisors (see below), whose sum is σ = 24382624. Its totient is φ = 6943104.

The previous prime is 13909547. The next prime is 13909573. The reversal of 13909564 is 46590931.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109 + ... + 5275.

Almost surely, 2^13909564 is an apocalyptic number.

It is an amenable number.

13909564 is a deficient number, since it is larger than the sum of its proper divisors (10473060).

13909564 is a wasteful number, since it uses less digits than its factorization.

13909564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844 (or 5842 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 13909564 is about 3729.5527882040. The cubic root of 13909564 is about 240.4941439295.

The spelling of 13909564 in words is "thirteen million, nine hundred nine thousand, five hundred sixty-four".