13926987 has 12 divisors (see below), whose sum is σ = 20343960. Its totient is φ = 9179808.

The previous prime is 13926977. The next prime is 13927027. The reversal of 13926987 is 78962931.

It is not a de Polignac number, because 13926987 - 2⁶ = 13926923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13926907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7893 + ... + 9494.

It is an arithmetic number, because the mean of its divisors is an integer number (1695330).

Almost surely, 2^13926987 is an apocalyptic number.

13926987 is a deficient number, since it is larger than the sum of its proper divisors (6416973).

13926987 is a wasteful number, since it uses less digits than its factorization.

13926987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17482 (or 17479 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 13926987 is about 3731.8878600515. The cubic root of 13926987 is about 240.5945156637.

The spelling of 13926987 in words is "thirteen million, nine hundred twenty-six thousand, nine hundred eighty-seven".