204789893 has 16 divisors (see below), whose sum is σ = 258827136. Its totient is φ = 157386240.

The previous prime is 204789889. The next prime is 204789901. The reversal of 204789893 is 398987402.

It is a happy number.

It is not a de Polignac number, because 204789893 - 2² = 204789889 is a prime.

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 (204789863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12596 + ... + 23837.

It is an arithmetic number, because the mean of its divisors is an integer number (16176696).

Almost surely, 2^204789893 is an apocalyptic number.

It is an amenable number.

204789893 is a deficient number, since it is larger than the sum of its proper divisors (54037243).

204789893 is a wasteful number, since it uses less digits than its factorization.

204789893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36524.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 204789893 is about 14310.4819275942. The cubic root of 204789893 is about 589.4353431369.

It can be divided in two parts, 204 and 789893, that added together give a palindrome (790097).

The spelling of 204789893 in words is "two hundred four million, seven hundred eighty-nine thousand, eight hundred ninety-three".