13929687 has 12 divisors (see below), whose sum is σ = 20155720. Its totient is φ = 9270288.

The previous prime is 13929677. The next prime is 13929691. The reversal of 13929687 is 78692931.

It is not a de Polignac number, because 13929687 - 2⁸ = 13929431 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 (13929667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6528 + ... + 8394.

Almost surely, 2^13929687 is an apocalyptic number.

13929687 is a deficient number, since it is larger than the sum of its proper divisors (6226033).

13929687 is a wasteful number, since it uses less digits than its factorization.

13929687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702 (or 2699 counting only the distinct ones).

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

The square root of 13929687 is about 3732.2495897247. The cubic root of 13929687 is about 240.6100625348.

The spelling of 13929687 in words is "thirteen million, nine hundred twenty-nine thousand, six hundred eighty-seven".