12769457 has 2 divisors, whose sum is σ = 12769458. Its totient is φ = 12769456.

The previous prime is 12769451. The next prime is 12769511. The reversal of 12769457 is 75496721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11669056 + 1100401 = 3416^2 + 1049^2 .

It is a cyclic number.

It is not a de Polignac number, because 12769457 - 2⁴ = 12769441 is a prime.

It is not a weakly prime, because it can be changed into another prime (12769451) 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, 6384728 + 6384729.

It is an arithmetic number, because the mean of its divisors is an integer number (6384729).

Almost surely, 2^12769457 is an apocalyptic number.

It is an amenable number.

12769457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12769457 is an equidigital number, since it uses as much as digits as its factorization.

12769457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 12769457 is about 3573.4377005903. The cubic root of 12769457 is about 233.7352119673.

The spelling of 12769457 in words is "twelve million, seven hundred sixty-nine thousand, four hundred fifty-seven".