204385239 has 6 divisors (see below), whose sum is σ = 295223136. Its totient is φ = 136256820.

The previous prime is 204385229. The next prime is 204385241. The reversal of 204385239 is 932583402.

It is not a de Polignac number, because 204385239 - 2²¹ = 202288087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204385229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11354727 + ... + 11354744.

It is an arithmetic number, because the mean of its divisors is an integer number (49203856).

Almost surely, 2^204385239 is an apocalyptic number.

204385239 is a deficient number, since it is larger than the sum of its proper divisors (90837897).

204385239 is a wasteful number, since it uses less digits than its factorization.

204385239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22709477 (or 22709474 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 204385239 is about 14296.3365587132. The cubic root of 204385239 is about 589.0468561243.

The spelling of 204385239 in words is "two hundred four million, three hundred eighty-five thousand, two hundred thirty-nine".