12791893 has 2 divisors, whose sum is σ = 12791894. Its totient is φ = 12791892.

The previous prime is 12791873. The next prime is 12791951. The reversal of 12791893 is 39819721.

12791893 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10712529 + 2079364 = 3273^2 + 1442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12791893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12791833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6395946 + 6395947.

It is an arithmetic number, because the mean of its divisors is an integer number (6395947).

Almost surely, 2^12791893 is an apocalyptic number.

It is an amenable number.

12791893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12791893 is an equidigital number, since it uses as much as digits as its factorization.

12791893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 40.

The square root of 12791893 is about 3576.5755968524. The cubic root of 12791893 is about 233.8720231859.

The spelling of 12791893 in words is "twelve million, seven hundred ninety-one thousand, eight hundred ninety-three".