13936887 has 16 divisors (see below), whose sum is σ = 21314560. Its totient is φ = 8991000.

The previous prime is 13936883. The next prime is 13936891. The reversal of 13936887 is 78863931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13936883) and next prime (13936891).

It is not a de Polignac number, because 13936887 - 2² = 13936883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13936883) 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, 7489 + ... + 9162.

It is an arithmetic number, because the mean of its divisors is an integer number (1332160).

Almost surely, 2^13936887 is an apocalyptic number.

13936887 is a deficient number, since it is larger than the sum of its proper divisors (7377673).

13936887 is a wasteful number, since it uses less digits than its factorization.

13936887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16691 (or 16685 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 13936887 is about 3733.2140308319. The cubic root of 13936887 is about 240.6515110387.

The spelling of 13936887 in words is "thirteen million, nine hundred thirty-six thousand, eight hundred eighty-seven".