13891916 has 6 divisors (see below), whose sum is σ = 24310860. Its totient is φ = 6945956.

The previous prime is 13891903. The next prime is 13891949. The reversal of 13891916 is 61919831.

It is a self number, because there is not a number n which added to its sum of digits gives 13891916.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1736486 + ... + 1736493.

It is an arithmetic number, because the mean of its divisors is an integer number (4051810).

Almost surely, 2^13891916 is an apocalyptic number.

It is an amenable number.

13891916 is a deficient number, since it is larger than the sum of its proper divisors (10418944).

13891916 is a wasteful number, since it uses less digits than its factorization.

13891916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472983 (or 3472981 counting only the distinct ones).

The product of its digits is 11664, while the sum is 38.

The square root of 13891916 is about 3727.1860699461. The cubic root of 13891916 is about 240.3923905148.

The spelling of 13891916 in words is "thirteen million, eight hundred ninety-one thousand, nine hundred sixteen".