33989090 has 16 divisors (see below), whose sum is σ = 61258680. Its totient is φ = 13578240.

The previous prime is 33989089. The next prime is 33989093. The reversal of 33989090 is 9098933.

It can be written as a sum of positive squares in 4 ways, for example, as 26801329 + 7187761 = 5177^2 + 2681^2 .

It is not an unprimeable number, because it can be changed into a prime (33989093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8546 + ... + 11874.

Almost surely, 2^33989090 is an apocalyptic number.

33989090 is a deficient number, since it is larger than the sum of its proper divisors (27269590).

33989090 is a wasteful number, since it uses less digits than its factorization.

33989090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 33989090 is about 5830.0162950030. The cubic root of 33989090 is about 323.9265252789.

The spelling of 33989090 in words is "thirty-three million, nine hundred eighty-nine thousand, ninety".