204849305 has 4 divisors (see below), whose sum is σ = 245819172. Its totient is φ = 163879440.

The previous prime is 204849299. The next prime is 204849313. The reversal of 204849305 is 503948402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503948402 = 2 ⋅251974201.

It can be written as a sum of positive squares in 2 ways, for example, as 102191881 + 102657424 = 10109^2 + 10132^2 .

It is not a de Polignac number, because 204849305 - 2¹⁴ = 204832921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20484926 + ... + 20484935.

It is an arithmetic number, because the mean of its divisors is an integer number (61454793).

Almost surely, 2^204849305 is an apocalyptic number.

It is an amenable number.

204849305 is a deficient number, since it is larger than the sum of its proper divisors (40969867).

204849305 is an equidigital number, since it uses as much as digits as its factorization.

204849305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40969866.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 204849305 is about 14312.5575981374. The cubic root of 204849305 is about 589.4923383758.

The spelling of 204849305 in words is "two hundred four million, eight hundred forty-nine thousand, three hundred five".