12393791 has 2 divisors, whose sum is σ = 12393792. Its totient is φ = 12393790.

The previous prime is 12393743. The next prime is 12393851. The reversal of 12393791 is 19739321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12393791 - 2¹⁰ = 12392767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12393091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6196895 + 6196896.

It is an arithmetic number, because the mean of its divisors is an integer number (6196896).

Almost surely, 2^12393791 is an apocalyptic number.

12393791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12393791 is an equidigital number, since it uses as much as digits as its factorization.

12393791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 35.

The square root of 12393791 is about 3520.4816431846. The cubic root of 12393791 is about 231.4202665203.

The spelling of 12393791 in words is "twelve million, three hundred ninety-three thousand, seven hundred ninety-one".