12686269 has 2 divisors, whose sum is σ = 12686270. Its totient is φ = 12686268.

The previous prime is 12686251. The next prime is 12686299. The reversal of 12686269 is 96268621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9847044 + 2839225 = 3138^2 + 1685^2 .

It is an emirp because it is prime and its reverse (96268621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12686269 is a prime.

It is a super-2 number, since 2×12686269² = 321882842280722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12686299) 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, 6343134 + 6343135.

It is an arithmetic number, because the mean of its divisors is an integer number (6343135).

Almost surely, 2^12686269 is an apocalyptic number.

It is an amenable number.

12686269 is a deficient number, since it is larger than the sum of its proper divisors (1).

12686269 is an equidigital number, since it uses as much as digits as its factorization.

12686269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 12686269 is about 3561.7789094777. The cubic root of 12686269 is about 233.2265413804.

The spelling of 12686269 in words is "twelve million, six hundred eighty-six thousand, two hundred sixty-nine".