12774889 has 2 divisors, whose sum is σ = 12774890. Its totient is φ = 12774888.

The previous prime is 12774869. The next prime is 12774893. The reversal of 12774889 is 98847721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9659664 + 3115225 = 3108^2 + 1765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12774889 is a prime.

It is not a weakly prime, because it can be changed into another prime (12774829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6387444 + 6387445.

It is an arithmetic number, because the mean of its divisors is an integer number (6387445).

Almost surely, 2^12774889 is an apocalyptic number.

It is an amenable number.

12774889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12774889 is an equidigital number, since it uses as much as digits as its factorization.

12774889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 46.

The square root of 12774889 is about 3574.1976722056. The cubic root of 12774889 is about 233.7683501470.

The spelling of 12774889 in words is "twelve million, seven hundred seventy-four thousand, eight hundred eighty-nine".