12993189 has 16 divisors (see below), whose sum is σ = 19552320. Its totient is φ = 7602560.

The previous prime is 12993173. The next prime is 12993191. The reversal of 12993189 is 98139921.

It is a cyclic number.

It is not a de Polignac number, because 12993189 - 2⁴ = 12993173 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12993189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12993119) 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, 5832 + ... + 7745.

It is an arithmetic number, because the mean of its divisors is an integer number (1222020).

Almost surely, 2^12993189 is an apocalyptic number.

It is an amenable number.

12993189 is a deficient number, since it is larger than the sum of its proper divisors (6559131).

12993189 is a wasteful number, since it uses less digits than its factorization.

12993189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13620.

The product of its digits is 34992, while the sum is 42.

The square root of 12993189 is about 3604.6066359590. The cubic root of 12993189 is about 235.0923976484.

The spelling of 12993189 in words is "twelve million, nine hundred ninety-three thousand, one hundred eighty-nine".