12936789 has 6 divisors (see below), whose sum is σ = 18686486. Its totient is φ = 8624520.

The previous prime is 12936769. The next prime is 12936817. The reversal of 12936789 is 98763921.

12936789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 1034289 = 3450^2 + 1017^2 .

It is not a de Polignac number, because 12936789 - 2⁸ = 12936533 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 (12936709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 718702 + ... + 718719.

Almost surely, 2^12936789 is an apocalyptic number.

It is an amenable number.

12936789 is a deficient number, since it is larger than the sum of its proper divisors (5749697).

12936789 is a wasteful number, since it uses less digits than its factorization.

12936789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437427 (or 1437424 counting only the distinct ones).

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

The square root of 12936789 is about 3596.7748052943. The cubic root of 12936789 is about 234.7517462877.

The spelling of 12936789 in words is "twelve million, nine hundred thirty-six thousand, seven hundred eighty-nine".