204390699 has 8 divisors (see below), whose sum is σ = 279167952. Its totient is φ = 132936960.

The previous prime is 204390679. The next prime is 204390707. The reversal of 204390699 is 996093402.

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

It is not a de Polignac number, because 204390699 - 2²³ = 196002091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204390699.

It is not an unprimeable number, because it can be changed into a prime (204390679) 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, 830734 + ... + 830979.

It is an arithmetic number, because the mean of its divisors is an integer number (34895994).

Almost surely, 2^204390699 is an apocalyptic number.

204390699 is a deficient number, since it is larger than the sum of its proper divisors (74777253).

204390699 is a wasteful number, since it uses less digits than its factorization.

204390699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661757.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 204390699 is about 14296.5275154493. The cubic root of 204390699 is about 589.0521013941.

The spelling of 204390699 in words is "two hundred four million, three hundred ninety thousand, six hundred ninety-nine".