13923791 has 6 divisors (see below), whose sum is σ = 16197120. Its totient is φ = 11934636.

The previous prime is 13923779. The next prime is 13923821. The reversal of 13923791 is 19732931.

It is not a de Polignac number, because 13923791 - 2¹⁸ = 13661647 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 (13923761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142031 + ... + 142128.

It is an arithmetic number, because the mean of its divisors is an integer number (2699520).

Almost surely, 2^13923791 is an apocalyptic number.

13923791 is a deficient number, since it is larger than the sum of its proper divisors (2273329).

13923791 is an equidigital number, since it uses as much as digits as its factorization.

13923791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284173 (or 284166 counting only the distinct ones).

The product of its digits is 10206, while the sum is 35.

The square root of 13923791 is about 3731.4596339770. The cubic root of 13923791 is about 240.5761101775.

The spelling of 13923791 in words is "thirteen million, nine hundred twenty-three thousand, seven hundred ninety-one".