12695899 has 2 divisors, whose sum is σ = 12695900. Its totient is φ = 12695898.

The previous prime is 12695887. The next prime is 12695909. The reversal of 12695899 is 99859621.

It is a strong prime.

It is an emirp because it is prime and its reverse (99859621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12695899 - 2⁵ = 12695867 is a prime.

It is a super-2 number, since 2×12695899² = 322371702836402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12695849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6347949 + 6347950.

It is an arithmetic number, because the mean of its divisors is an integer number (6347950).

Almost surely, 2^12695899 is an apocalyptic number.

12695899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12695899 is an equidigital number, since it uses as much as digits as its factorization.

12695899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 49.

The square root of 12695899 is about 3563.1305056088. The cubic root of 12695899 is about 233.2855396442.

The spelling of 12695899 in words is "twelve million, six hundred ninety-five thousand, eight hundred ninety-nine".