204423539 has 8 divisors (see below), whose sum is σ = 209149248. Its totient is φ = 199713600.

The previous prime is 204423533. The next prime is 204423559. The reversal of 204423539 is 935324402.

204423539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204423539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204423533) 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, 24629 + ... + 31865.

It is an arithmetic number, because the mean of its divisors is an integer number (26143656).

Almost surely, 2^204423539 is an apocalyptic number.

204423539 is a deficient number, since it is larger than the sum of its proper divisors (4725709).

204423539 is an equidigital number, since it uses as much as digits as its factorization.

204423539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7885.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 204423539 is about 14297.6759999659. The cubic root of 204423539 is about 589.0836478966.

The spelling of 204423539 in words is "two hundred four million, four hundred twenty-three thousand, five hundred thirty-nine".