204432009 has 8 divisors (see below), whose sum is σ = 272813472. Its totient is φ = 136169280.

The previous prime is 204431977. The next prime is 204432017. The reversal of 204432009 is 900234402.

It is a happy number.

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

It is not a de Polignac number, because 204432009 - 2⁵ = 204431977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204432009.

It is not an unprimeable number, because it can be changed into a prime (204432409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25584 + ... + 32609.

It is an arithmetic number, because the mean of its divisors is an integer number (34101684).

Almost surely, 2^204432009 is an apocalyptic number.

It is an amenable number.

204432009 is a deficient number, since it is larger than the sum of its proper divisors (68381463).

204432009 is a wasteful number, since it uses less digits than its factorization.

204432009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59367.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 204432009 is about 14297.9721988819. The cubic root of 204432009 is about 589.0917837333.

The spelling of 204432009 in words is "two hundred four million, four hundred thirty-two thousand, nine".