12769389 has 12 divisors (see below), whose sum is σ = 18495100. Its totient is φ = 8489664.

The previous prime is 12769381. The next prime is 12769391. The reversal of 12769389 is 98396721.

12769389 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5560164 + 7209225 = 2358^2 + 2685^2 .

It is not a de Polignac number, because 12769389 - 2³ = 12769381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12769381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1947 + ... + 5415.

Almost surely, 2^12769389 is an apocalyptic number.

It is an amenable number.

12769389 is a deficient number, since it is larger than the sum of its proper divisors (5725711).

12769389 is a wasteful number, since it uses less digits than its factorization.

12769389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884 (or 3881 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 12769389 is about 3573.4281859301. The cubic root of 12769389 is about 233.7347970705.

The spelling of 12769389 in words is "twelve million, seven hundred sixty-nine thousand, three hundred eighty-nine".