12889433 has 2 divisors, whose sum is σ = 12889434. Its totient is φ = 12889432.

The previous prime is 12889423. The next prime is 12889447. The reversal of 12889433 is 33498821.

12889433 is digitally balanced in base 2, 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., 11641744 + 1247689 = 3412^2 + 1117^2 .

It is a cyclic number.

It is not a de Polignac number, because 12889433 - 2²² = 8695129 is a prime.

It is a super-2 number, since 2×12889433² = 332274966122978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12889423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444716 + 6444717.

It is an arithmetic number, because the mean of its divisors is an integer number (6444717).

Almost surely, 2^12889433 is an apocalyptic number.

It is an amenable number.

12889433 is a deficient number, since it is larger than the sum of its proper divisors (1).

12889433 is an equidigital number, since it uses as much as digits as its factorization.

12889433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 12889433 is about 3590.1856497958. The cubic root of 12889433 is about 234.4649544602.

The spelling of 12889433 in words is "twelve million, eight hundred eighty-nine thousand, four hundred thirty-three".