13768393 has 4 divisors (see below), whose sum is σ = 14028228. Its totient is φ = 13508560.

The previous prime is 13768387. The next prime is 13768411. The reversal of 13768393 is 39386731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39386731 = 1669 ⋅23599.

It can be written as a sum of positive squares in 2 ways, for example, as 4108729 + 9659664 = 2027^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 13768393 - 2⁵ = 13768361 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13768303) 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 3 ways as a sum of consecutive naturals, for example, 129838 + ... + 129943.

It is an arithmetic number, because the mean of its divisors is an integer number (3507057).

Almost surely, 2^13768393 is an apocalyptic number.

It is an amenable number.

13768393 is a deficient number, since it is larger than the sum of its proper divisors (259835).

13768393 is an equidigital number, since it uses as much as digits as its factorization.

13768393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259834.

The product of its digits is 81648, while the sum is 40.

The square root of 13768393 is about 3710.5785263217. The cubic root of 13768393 is about 239.6777677851.

It can be divided in two parts, 13768 and 393, that added together give a square (14161 = 119²).

The spelling of 13768393 in words is "thirteen million, seven hundred sixty-eight thousand, three hundred ninety-three".