12457769 has 2 divisors, whose sum is σ = 12457770. Its totient is φ = 12457768.

The previous prime is 12457759. The next prime is 12457777. The reversal of 12457769 is 96775421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6760000 + 5697769 = 2600^2 + 2387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12457769 is a prime.

It is a super-2 number, since 2×12457769² = 310392016914722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12457729) 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, 6228884 + 6228885.

It is an arithmetic number, because the mean of its divisors is an integer number (6228885).

Almost surely, 2^12457769 is an apocalyptic number.

It is an amenable number.

12457769 is a deficient number, since it is larger than the sum of its proper divisors (1).

12457769 is an equidigital number, since it uses as much as digits as its factorization.

12457769 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 12457769 is about 3529.5564877191. The cubic root of 12457769 is about 231.8177882113.

The spelling of 12457769 in words is "twelve million, four hundred fifty-seven thousand, seven hundred sixty-nine".