33223189 has 2 divisors, whose sum is σ = 33223190. Its totient is φ = 33223188.

The previous prime is 33223187. The next prime is 33223199. The reversal of 33223189 is 98132233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31640625 + 1582564 = 5625^2 + 1258^2 .

It is an emirp because it is prime and its reverse (98132233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33223189 - 2¹ = 33223187 is a prime.

It is a super-2 number, since 2×33223189² = 2207560574659442, which contains 22 as substring.

Together with 33223187, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 33223189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33223187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16611594 + 16611595.

It is an arithmetic number, because the mean of its divisors is an integer number (16611595).

Almost surely, 2^33223189 is an apocalyptic number.

It is an amenable number.

33223189 is a deficient number, since it is larger than the sum of its proper divisors (1).

33223189 is an equidigital number, since it uses as much as digits as its factorization.

33223189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 33223189 is about 5763.9560199571. The cubic root of 33223189 is about 321.4749264316.

The spelling of 33223189 in words is "thirty-three million, two hundred twenty-three thousand, one hundred eighty-nine".