33222989 has 2 divisors, whose sum is σ = 33222990. Its totient is φ = 33222988.

The previous prime is 33222983. The next prime is 33223007. The reversal of 33222989 is 98922233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21696964 + 11526025 = 4658^2 + 3395^2 .

It is an emirp because it is prime and its reverse (98922233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33222989 - 2⁸ = 33222733 is a prime.

It is a super-2 number, since 2×33222989² = 2207533996188242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33222983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16611494 + 16611495.

It is an arithmetic number, because the mean of its divisors is an integer number (16611495).

Almost surely, 2^33222989 is an apocalyptic number.

It is an amenable number.

33222989 is a deficient number, since it is larger than the sum of its proper divisors (1).

33222989 is an equidigital number, since it uses as much as digits as its factorization.

33222989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 33222989 is about 5763.9386707355. The cubic root of 33222989 is about 321.4742813488.

The spelling of 33222989 in words is "thirty-three million, two hundred twenty-two thousand, nine hundred eighty-nine".