12993893 has 4 divisors (see below), whose sum is σ = 14175168. Its totient is φ = 11812620.

The previous prime is 12993889. The next prime is 12993907. The reversal of 12993893 is 39839921.

12993893 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12993893 - 2² = 12993889 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 (12993803) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 590621 + ... + 590642.

It is an arithmetic number, because the mean of its divisors is an integer number (3543792).

Almost surely, 2^12993893 is an apocalyptic number.

It is an amenable number.

12993893 is a deficient number, since it is larger than the sum of its proper divisors (1181275).

12993893 is a wasteful number, since it uses less digits than its factorization.

12993893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181274.

The product of its digits is 104976, while the sum is 44.

The square root of 12993893 is about 3604.7042874555. The cubic root of 12993893 is about 235.0966435154.

It can be divided in two parts, 129938 and 93, that added together give a palindrome (130031).

The spelling of 12993893 in words is "twelve million, nine hundred ninety-three thousand, eight hundred ninety-three".