13985915 has 16 divisors (see below), whose sum is σ = 17273088. Its totient is φ = 10867296.

The previous prime is 13985911. The next prime is 13985927. The reversal of 13985915 is 51958931.

It is a cyclic number.

It is not a de Polignac number, because 13985915 - 2² = 13985911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13985911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27554 + ... + 28056.

It is an arithmetic number, because the mean of its divisors is an integer number (1079568).

Almost surely, 2^13985915 is an apocalyptic number.

13985915 is a deficient number, since it is larger than the sum of its proper divisors (3287173).

13985915 is an equidigital number, since it uses as much as digits as its factorization.

13985915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658.

The product of its digits is 48600, while the sum is 41.

The square root of 13985915 is about 3739.7747258358. The cubic root of 13985915 is about 240.9333734545.

The spelling of 13985915 in words is "thirteen million, nine hundred eighty-five thousand, nine hundred fifteen".