204394853 has 6 divisors (see below), whose sum is σ = 221327154. Its totient is φ = 188672016.

The previous prime is 204394849. The next prime is 204394889. The reversal of 204394853 is 358493402.

204394853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 14010049 + 190384804 = 3743^2 + 13798^2 .

It is not a de Polignac number, because 204394853 - 2² = 204394849 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 (204394843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 604550 + ... + 604887.

It is an arithmetic number, because the mean of its divisors is an integer number (36887859).

Almost surely, 2^204394853 is an apocalyptic number.

It is an amenable number.

204394853 is a deficient number, since it is larger than the sum of its proper divisors (16932301).

204394853 is a wasteful number, since it uses less digits than its factorization.

204394853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209463 (or 1209450 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 204394853 is about 14296.6727947449. The cubic root of 204394853 is about 589.0560919636.

The spelling of 204394853 in words is "two hundred four million, three hundred ninety-four thousand, eight hundred fifty-three".