204889913 has 8 divisors (see below), whose sum is σ = 208863360. Its totient is φ = 200954800.

The previous prime is 204889889. The next prime is 204889961. The reversal of 204889913 is 319988402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204889913 - 2⁶ = 204889849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204889213) 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, 1328 + ... + 20286.

It is an arithmetic number, because the mean of its divisors is an integer number (26107920).

Almost surely, 2^204889913 is an apocalyptic number.

It is an amenable number.

204889913 is a deficient number, since it is larger than the sum of its proper divisors (3973447).

204889913 is a wasteful number, since it uses less digits than its factorization.

204889913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19167.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 204889913 is about 14313.9761422185. The cubic root of 204889913 is about 589.5312881838.

The spelling of 204889913 in words is "two hundred four million, eight hundred eighty-nine thousand, nine hundred thirteen".