33804989 has 4 divisors (see below), whose sum is σ = 33817056. Its totient is φ = 33792924.

The previous prime is 33804983. The next prime is 33805001. The reversal of 33804989 is 98940833.

33804989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98940833 = 17 ⋅5820049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33804989 is a prime.

It is a super-2 number, since 2×33804989² = 2285554562580242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33804983) 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 in 3 ways as a sum of consecutive naturals, for example, 602 + ... + 8244.

It is an arithmetic number, because the mean of its divisors is an integer number (8454264).

Almost surely, 2^33804989 is an apocalyptic number.

It is an amenable number.

33804989 is a deficient number, since it is larger than the sum of its proper divisors (12067).

33804989 is an equidigital number, since it uses as much as digits as its factorization.

33804989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12066.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 33804989 is about 5814.2057927115. The cubic root of 33804989 is about 323.3406196915.

The spelling of 33804989 in words is "thirty-three million, eight hundred four thousand, nine hundred eighty-nine".