204400593 has 12 divisors (see below), whose sum is σ = 295371648. Its totient is φ = 136208760.

The previous prime is 204400583. The next prime is 204400601. The reversal of 204400593 is 395004402.

204400593 is a `hidden beast` number, since 204 + 400 + 59 + 3 = 666.

It is not a de Polignac number, because 204400593 - 2⁶ = 204400529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204400523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32296 + ... + 38102.

It is an arithmetic number, because the mean of its divisors is an integer number (24614304).

Almost surely, 2^204400593 is an apocalyptic number.

It is an amenable number.

204400593 is a deficient number, since it is larger than the sum of its proper divisors (90971055).

204400593 is a wasteful number, since it uses less digits than its factorization.

204400593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9724 (or 9721 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 204400593 is about 14296.8735393442. The cubic root of 204400593 is about 589.0616060462.

Adding to 204400593 its reverse (395004402), we get a palindrome (599404995).

The spelling of 204400593 in words is "two hundred four million, four hundred thousand, five hundred ninety-three".