13938393 has 12 divisors (see below), whose sum is σ = 21618960. Its totient is φ = 7964712.

The previous prime is 13938383. The next prime is 13938403. The reversal of 13938393 is 39383931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13938383) and next prime (13938403).

It is not a de Polignac number, because 13938393 - 2⁵ = 13938361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13938373) 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, 47263 + ... + 47556.

It is an arithmetic number, because the mean of its divisors is an integer number (1801580).

Almost surely, 2^13938393 is an apocalyptic number.

It is an amenable number.

13938393 is a deficient number, since it is larger than the sum of its proper divisors (7680567).

13938393 is an equidigital number, since it uses as much as digits as its factorization.

13938393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94836 (or 94829 counting only the distinct ones).

The product of its digits is 52488, while the sum is 39.

The square root of 13938393 is about 3733.4157282574. The cubic root of 13938393 is about 240.6601788787.

The spelling of 13938393 in words is "thirteen million, nine hundred thirty-eight thousand, three hundred ninety-three".