204889933 has 4 divisors (see below), whose sum is σ = 216942300. Its totient is φ = 192837568.

The previous prime is 204889889. The next prime is 204889961. The reversal of 204889933 is 339988402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189695529 + 15194404 = 13773^2 + 3898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204889933 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 (204889033) 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, 6026158 + ... + 6026191.

It is an arithmetic number, because the mean of its divisors is an integer number (54235575).

Almost surely, 2^204889933 is an apocalyptic number.

It is an amenable number.

204889933 is a deficient number, since it is larger than the sum of its proper divisors (12052367).

204889933 is a wasteful number, since it uses less digits than its factorization.

204889933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12052366.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 204889933 is about 14313.9768408364. The cubic root of 204889933 is about 589.5313073658.

The spelling of 204889933 in words is "two hundred four million, eight hundred eighty-nine thousand, nine hundred thirty-three".