12385391 has 2 divisors, whose sum is σ = 12385392. Its totient is φ = 12385390.

The previous prime is 12385381. The next prime is 12385433. The reversal of 12385391 is 19358321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12385391 is a prime.

It is a Sophie Germain 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 (12385361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6192695 + 6192696.

It is an arithmetic number, because the mean of its divisors is an integer number (6192696).

Almost surely, 2^12385391 is an apocalyptic number.

12385391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12385391 is an equidigital number, since it uses as much as digits as its factorization.

12385391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 12385391 is about 3519.2884223945. The cubic root of 12385391 is about 231.3679723359.

The spelling of 12385391 in words is "twelve million, three hundred eighty-five thousand, three hundred ninety-one".