204349 has 4 divisors (see below), whose sum is σ = 205660. Its totient is φ = 203040.

The previous prime is 204331. The next prime is 204353. The reversal of 204349 is 943402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8100 + 196249 = 90^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 204349 - 2¹⁷ = 73277 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (51415).

2²⁰⁴³⁴⁹ is an apocalyptic number.

It is an amenable number.

204349 is a deficient number, since it is larger than the sum of its proper divisors (1311).

204349 is a wasteful number, since it uses less digits than its factorization.

204349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310.

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

The square root of 204349 is about 452.0497760203. The cubic root of 204349 is about 58.9012039959.

The spelling of 204349 in words is "two hundred four thousand, three hundred forty-nine".