12595991 has 2 divisors, whose sum is σ = 12595992. Its totient is φ = 12595990.

The previous prime is 12595949. The next prime is 12596009. The reversal of 12595991 is 19959521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12595991 - 2¹⁸ = 12333847 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 (12595591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6297995 + 6297996.

It is an arithmetic number, because the mean of its divisors is an integer number (6297996).

Almost surely, 2^12595991 is an apocalyptic number.

12595991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12595991 is an equidigital number, since it uses as much as digits as its factorization.

12595991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 41.

The square root of 12595991 is about 3549.0831210328. The cubic root of 12595991 is about 232.6719951362.

The spelling of 12595991 in words is "twelve million, five hundred ninety-five thousand, nine hundred ninety-one".