12759881 has 2 divisors, whose sum is σ = 12759882. Its totient is φ = 12759880.

The previous prime is 12759853. The next prime is 12759883. The reversal of 12759881 is 18895721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 614656 = 3485^2 + 784^2 .

It is a cyclic number.

It is not a de Polignac number, because 12759881 - 2²² = 8565577 is a prime.

It is a super-2 number, since 2×12759881² = 325629126268322, which contains 22 as substring.

Together with 12759883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12759883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6379940 + 6379941.

It is an arithmetic number, because the mean of its divisors is an integer number (6379941).

Almost surely, 2^12759881 is an apocalyptic number.

It is an amenable number.

12759881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12759881 is an equidigital number, since it uses as much as digits as its factorization.

12759881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 41.

The square root of 12759881 is about 3572.0975630573. The cubic root of 12759881 is about 233.6767702204.

The spelling of 12759881 in words is "twelve million, seven hundred fifty-nine thousand, eight hundred eighty-one".