13938593 has 4 divisors (see below), whose sum is σ = 14066580. Its totient is φ = 13810608.

The previous prime is 13938581. The next prime is 13938671. The reversal of 13938593 is 39583931.

13938593 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3775249 + 10163344 = 1943^2 + 3188^2 .

It is a cyclic number.

It is not a de Polignac number, because 13938593 - 2⁴ = 13938577 is a prime.

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 13938593.

It is not an unprimeable number, because it can be changed into a prime (13938553) 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, 63830 + ... + 64047.

It is an arithmetic number, because the mean of its divisors is an integer number (3516645).

Almost surely, 2^13938593 is an apocalyptic number.

It is an amenable number.

13938593 is a deficient number, since it is larger than the sum of its proper divisors (127987).

13938593 is a wasteful number, since it uses less digits than its factorization.

13938593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127986.

The product of its digits is 87480, while the sum is 41.

The square root of 13938593 is about 3733.4425132845. The cubic root of 13938593 is about 240.6613299393.

The spelling of 13938593 in words is "thirteen million, nine hundred thirty-eight thousand, five hundred ninety-three".