204943 has 8 divisors (see below), whose sum is σ = 218880. Its totient is φ = 191520.

The previous prime is 204931. The next prime is 204947. The reversal of 204943 is 349402.

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

It is a cyclic number.

It is not a de Polignac number, because 204943 - 2⁹ = 204431 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 (204947) 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, 978 + ... + 1168.

It is an arithmetic number, because the mean of its divisors is an integer number (27360).

2²⁰⁴⁹⁴³ is an apocalyptic number.

204943 is a deficient number, since it is larger than the sum of its proper divisors (13937).

204943 is a wasteful number, since it uses less digits than its factorization.

204943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 204943 is about 452.7063065609. The cubic root of 204943 is about 58.9582199662.

The spelling of 204943 in words is "two hundred four thousand, nine hundred forty-three".