204349393 has 6 divisors (see below), whose sum is σ = 205006466. Its totient is φ = 203694192.

The previous prime is 204349381. The next prime is 204349421. The reversal of 204349393 is 393943402.

It can be written as a sum of positive squares in only one way, i.e., 125619264 + 78730129 = 11208^2 + 8873^2 .

It is not a de Polignac number, because 204349393 - 2²¹ = 202252241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204349793) 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, 217621 + ... + 218557.

It is a 311-hyperperfect number.

Almost surely, 2^204349393 is an apocalyptic number.

It is an amenable number.

204349393 is a deficient number, since it is larger than the sum of its proper divisors (657073).

204349393 is an frugal number, since it uses more digits than its factorization.

204349393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 204349393 is about 14295.0828259230. The cubic root of 204349393 is about 589.0124175509.

The spelling of 204349393 in words is "two hundred four million, three hundred forty-nine thousand, three hundred ninety-three".