13897593 has 6 divisors (see below), whose sum is σ = 20074314. Its totient is φ = 9265056.

The previous prime is 13897577. The next prime is 13897613. The reversal of 13897593 is 39579831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13860729 + 36864 = 3723^2 + 192^2 .

It is not a de Polignac number, because 13897593 - 2⁴ = 13897577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13897523) 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 5 ways as a sum of consecutive naturals, for example, 772080 + ... + 772097.

It is an arithmetic number, because the mean of its divisors is an integer number (3345719).

Almost surely, 2^13897593 is an apocalyptic number.

It is an amenable number.

13897593 is a deficient number, since it is larger than the sum of its proper divisors (6176721).

13897593 is a wasteful number, since it uses less digits than its factorization.

13897593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544183 (or 1544180 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 13897593 is about 3727.9475586440. The cubic root of 13897593 is about 240.4251319006.

The spelling of 13897593 in words is "thirteen million, eight hundred ninety-seven thousand, five hundred ninety-three".