12789249 has 16 divisors (see below), whose sum is σ = 18662400. Its totient is φ = 7726160.

The previous prime is 12789241. The next prime is 12789263. The reversal of 12789249 is 94298721.

It is a cyclic number.

It is not a de Polignac number, because 12789249 - 2³ = 12789241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12789249.

It is not an unprimeable number, because it can be changed into a prime (12789241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19444 + ... + 20090.

It is an arithmetic number, because the mean of its divisors is an integer number (1166400).

Almost surely, 2^12789249 is an apocalyptic number.

It is an amenable number.

12789249 is a deficient number, since it is larger than the sum of its proper divisors (5873151).

12789249 is a wasteful number, since it uses less digits than its factorization.

12789249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260.

The product of its digits is 72576, while the sum is 42.

The square root of 12789249 is about 3576.2059504452. The cubic root of 12789249 is about 233.8559088068.

The spelling of 12789249 in words is "twelve million, seven hundred eighty-nine thousand, two hundred forty-nine".