13931667 has 12 divisors (see below), whose sum is σ = 20272200. Its totient is φ = 9219168.

The previous prime is 13931663. The next prime is 13931669. The reversal of 13931667 is 76613931.

It is not a de Polignac number, because 13931667 - 2² = 13931663 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13931663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4417 + ... + 6882.

It is an arithmetic number, because the mean of its divisors is an integer number (1689350).

Almost surely, 2^13931667 is an apocalyptic number.

13931667 is a deficient number, since it is larger than the sum of its proper divisors (6340533).

13931667 is a wasteful number, since it uses less digits than its factorization.

13931667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11442 (or 11439 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 13931667 is about 3732.5148358714. The cubic root of 13931667 is about 240.6214622969.

The spelling of 13931667 in words is "thirteen million, nine hundred thirty-one thousand, six hundred sixty-seven".