204366993 has 16 divisors (see below), whose sum is σ = 278125056. Its totient is φ = 133436160.

The previous prime is 204366971. The next prime is 204367049. The reversal of 204366993 is 399663402.

It is not a de Polignac number, because 204366993 - 2¹² = 204362897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204366913) 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, 156921 + ... + 158217.

It is an arithmetic number, because the mean of its divisors is an integer number (17382816).

Almost surely, 2^204366993 is an apocalyptic number.

It is an amenable number.

204366993 is a deficient number, since it is larger than the sum of its proper divisors (73758063).

204366993 is a wasteful number, since it uses less digits than its factorization.

204366993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 204366993 is about 14295.6984089620. The cubic root of 204366993 is about 589.0293270228.

The spelling of 204366993 in words is "two hundred four million, three hundred sixty-six thousand, nine hundred ninety-three".