204871839 has 8 divisors (see below), whose sum is σ = 281974272. Its totient is φ = 132175320.

The previous prime is 204871837. The next prime is 204871847. The reversal of 204871839 is 938178402.

204871839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 204871839 - 2¹ = 204871837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204871839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204871837) 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, 1101369 + ... + 1101554.

It is an arithmetic number, because the mean of its divisors is an integer number (35246784).

Almost surely, 2^204871839 is an apocalyptic number.

204871839 is a deficient number, since it is larger than the sum of its proper divisors (77102433).

204871839 is a wasteful number, since it uses less digits than its factorization.

204871839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202957.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 204871839 is about 14313.3447872955. The cubic root of 204871839 is about 589.5139528553.

The spelling of 204871839 in words is "two hundred four million, eight hundred seventy-one thousand, eight hundred thirty-nine".