204801109 has 8 divisors (see below), whose sum is σ = 210351960. Its totient is φ = 199276800.

The previous prime is 204801083. The next prime is 204801143. The reversal of 204801109 is 901108402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 396900 + 204404209 = 630^2 + 14297^2 .

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 204801109 - 2⁹ = 204800597 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 (204801199) 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 7 ways as a sum of consecutive naturals, for example, 9529 + ... + 22369.

It is an arithmetic number, because the mean of its divisors is an integer number (26293995).

Almost surely, 2^204801109 is an apocalyptic number.

It is an amenable number.

204801109 is a deficient number, since it is larger than the sum of its proper divisors (5550851).

204801109 is a wasteful number, since it uses less digits than its factorization.

204801109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13271.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 204801109 is about 14310.8738028116. The cubic root of 204801109 is about 589.4461037365.

The spelling of 204801109 in words is "two hundred four million, eight hundred one thousand, one hundred nine".