12891933 has 16 divisors (see below), whose sum is σ = 20223360. Its totient is φ = 8088768.

The previous prime is 12891929. The next prime is 12891941. The reversal of 12891933 is 33919821.

It is not a de Polignac number, because 12891933 - 2² = 12891929 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12891953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13585 + ... + 14502.

It is an arithmetic number, because the mean of its divisors is an integer number (1263960).

Almost surely, 2^12891933 is an apocalyptic number.

It is an amenable number.

12891933 is a deficient number, since it is larger than the sum of its proper divisors (7331427).

12891933 is a wasteful number, since it uses less digits than its factorization.

12891933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28113 (or 28107 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 12891933 is about 3590.5338043249. The cubic root of 12891933 is about 234.4801122124.

It can be divided in two parts, 12891 and 933, that added together give a cube (13824 = 24³).

The spelling of 12891933 in words is "twelve million, eight hundred ninety-one thousand, nine hundred thirty-three".