12789965 has 16 divisors (see below), whose sum is σ = 15820608. Its totient is φ = 9922176.

The previous prime is 12789947. The next prime is 12789971. The reversal of 12789965 is 56998721.

12789965 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12789965 - 2⁸ = 12789709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 24194 + ... + 24716.

It is an arithmetic number, because the mean of its divisors is an integer number (988788).

Almost surely, 2^12789965 is an apocalyptic number.

It is an amenable number.

12789965 is a deficient number, since it is larger than the sum of its proper divisors (3030643).

12789965 is an equidigital number, since it uses as much as digits as its factorization.

12789965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668.

The product of its digits is 272160, while the sum is 47.

The square root of 12789965 is about 3576.3060551357. The cubic root of 12789965 is about 233.8602728292.

The spelling of 12789965 in words is "twelve million, seven hundred eighty-nine thousand, nine hundred sixty-five".