204413999 has 4 divisors (see below), whose sum is σ = 204444336. Its totient is φ = 204383664.

The previous prime is 204413971. The next prime is 204414019. The reversal of 204413999 is 999314402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 204413999 - 2⁸ = 204413743 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 (204413299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14 + ... + 20219.

It is an arithmetic number, because the mean of its divisors is an integer number (51111084).

Almost surely, 2^204413999 is an apocalyptic number.

204413999 is a deficient number, since it is larger than the sum of its proper divisors (30337).

204413999 is a wasteful number, since it uses less digits than its factorization.

204413999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30336.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 204413999 is about 14297.3423754207. The cubic root of 204413999 is about 589.0744840050.

The spelling of 204413999 in words is "two hundred four million, four hundred thirteen thousand, nine hundred ninety-nine".