13879687 has 4 divisors (see below), whose sum is σ = 13889880. Its totient is φ = 13869496.

The previous prime is 13879673. The next prime is 13879717. The reversal of 13879687 is 78697831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13879687 - 2¹⁵ = 13846919 is a prime.

It is a super-2 number, since 2×13879687² = 385291422435938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13879687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13879627) 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 3 ways as a sum of consecutive naturals, for example, 2668 + ... + 5905.

It is an arithmetic number, because the mean of its divisors is an integer number (3472470).

Almost surely, 2^13879687 is an apocalyptic number.

13879687 is a deficient number, since it is larger than the sum of its proper divisors (10193).

13879687 is an equidigital number, since it uses as much as digits as its factorization.

13879687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10192.

The product of its digits is 508032, while the sum is 49.

The square root of 13879687 is about 3725.5451950017. The cubic root of 13879687 is about 240.3218309753.

The spelling of 13879687 in words is "thirteen million, eight hundred seventy-nine thousand, six hundred eighty-seven".