12912769 has 2 divisors, whose sum is σ = 12912770. Its totient is φ = 12912768.

The previous prime is 12912719. The next prime is 12912773. The reversal of 12912769 is 96721921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12567025 + 345744 = 3545^2 + 588^2 .

It is a cyclic number.

It is not a de Polignac number, because 12912769 - 2⁹ = 12912257 is a prime.

It is a super-2 number, since 2×12912769² = 333479206494722, which contains 22 as substring.

It is equal to p₈₄₃₉₅₈ and since 12912769 and 843958 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12912719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6456384 + 6456385.

It is an arithmetic number, because the mean of its divisors is an integer number (6456385).

Almost surely, 2^12912769 is an apocalyptic number.

It is an amenable number.

12912769 is a deficient number, since it is larger than the sum of its proper divisors (1).

12912769 is an equidigital number, since it uses as much as digits as its factorization.

12912769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 37.

The square root of 12912769 is about 3593.4341513377. The cubic root of 12912769 is about 234.6063668224.

The spelling of 12912769 in words is "twelve million, nine hundred twelve thousand, seven hundred sixty-nine".