13991612 has 12 divisors (see below), whose sum is σ = 25925760. Its totient is φ = 6584256.

The previous prime is 13991597. The next prime is 13991639. The reversal of 13991612 is 21619931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102812 + ... + 102947.

It is an arithmetic number, because the mean of its divisors is an integer number (2160480).

Almost surely, 2^13991612 is an apocalyptic number.

It is an amenable number.

13991612 is a deficient number, since it is larger than the sum of its proper divisors (11934148).

13991612 is a wasteful number, since it uses less digits than its factorization.

13991612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205780 (or 205778 counting only the distinct ones).

The product of its digits is 2916, while the sum is 32.

The square root of 13991612 is about 3740.5363251812. The cubic root of 13991612 is about 240.9660828172.

The spelling of 13991612 in words is "thirteen million, nine hundred ninety-one thousand, six hundred twelve".