33102989 has 4 divisors (see below), whose sum is σ = 33341280. Its totient is φ = 32864700.

The previous prime is 33102983. The next prime is 33103001. The reversal of 33102989 is 98920133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98920133 = 13 ⋅7609241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33102989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33102983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118937 + ... + 119214.

It is an arithmetic number, because the mean of its divisors is an integer number (8335320).

Almost surely, 2^33102989 is an apocalyptic number.

It is an amenable number.

33102989 is a deficient number, since it is larger than the sum of its proper divisors (238291).

33102989 is a wasteful number, since it uses less digits than its factorization.

33102989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238290.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 33102989 is about 5753.5197053630. The cubic root of 33102989 is about 321.0867640062.

The spelling of 33102989 in words is "thirty-three million, one hundred two thousand, nine hundred eighty-nine".