13393975 has 12 divisors (see below), whose sum is σ = 18981424. Its totient is φ = 9184320.

The previous prime is 13393973. The next prime is 13393979. The reversal of 13393975 is 57939331.

It is not a de Polignac number, because 13393975 - 2¹ = 13393973 is a prime.

It is a hoax number, since the sum of its digits (40) 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 (13393973) 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, 38094 + ... + 38443.

Almost surely, 2^13393975 is an apocalyptic number.

13393975 is a deficient number, since it is larger than the sum of its proper divisors (5587449).

13393975 is an equidigital number, since it uses as much as digits as its factorization.

13393975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76554 (or 76549 counting only the distinct ones).

The product of its digits is 76545, while the sum is 40.

The square root of 13393975 is about 3659.7779987316. Note that the first 3 decimals coincide. The cubic root of 13393975 is about 237.4851698958.

The spelling of 13393975 in words is "thirteen million, three hundred ninety-three thousand, nine hundred seventy-five".