12393813 has 8 divisors (see below), whose sum is σ = 16552800. Its totient is φ = 8248688.

The previous prime is 12393791. The next prime is 12393851. The reversal of 12393813 is 31839321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12393813 - 2¹³ = 12385621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12393863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (2069100).

Almost surely, 2^12393813 is an apocalyptic number.

It is an amenable number.

12393813 is a deficient number, since it is larger than the sum of its proper divisors (4158987).

12393813 is an equidigital number, since it uses as much as digits as its factorization.

12393813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931.

The product of its digits is 3888, while the sum is 30.

The square root of 12393813 is about 3520.4847677557. The cubic root of 12393813 is about 231.4204034503.

The spelling of 12393813 in words is "twelve million, three hundred ninety-three thousand, eight hundred thirteen".