33297989 has 2 divisors, whose sum is σ = 33297990. Its totient is φ = 33297988.

The previous prime is 33297977. The next prime is 33298033. The reversal of 33297989 is 98979233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32604100 + 693889 = 5710^2 + 833^2 .

It is a cyclic number.

It is not a de Polignac number, because 33297989 - 2¹² = 33293893 is a prime.

It is a super-2 number, since 2×33297989² = 2217512142888242, 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 (33297389) 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 as a sum of consecutive naturals, namely, 16648994 + 16648995.

It is an arithmetic number, because the mean of its divisors is an integer number (16648995).

Almost surely, 2^33297989 is an apocalyptic number.

It is an amenable number.

33297989 is a deficient number, since it is larger than the sum of its proper divisors (1).

33297989 is an equidigital number, since it uses as much as digits as its factorization.

33297989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The square root of 33297989 is about 5770.4409710177. The cubic root of 33297989 is about 321.7160060457.

The spelling of 33297989 in words is "thirty-three million, two hundred ninety-seven thousand, nine hundred eighty-nine".