204398407 has 8 divisors (see below), whose sum is σ = 216139392. Its totient is φ = 192979200.

The previous prime is 204398377. The next prime is 204398417. The reversal of 204398407 is 704893402.

It is a happy number.

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 204398407 - 2¹¹ = 204396359 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 (204398417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79138 + ... + 81679.

It is an arithmetic number, because the mean of its divisors is an integer number (27017424).

Almost surely, 2^204398407 is an apocalyptic number.

204398407 is a deficient number, since it is larger than the sum of its proper divisors (11740985).

204398407 is a wasteful number, since it uses less digits than its factorization.

204398407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160889.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 204398407 is about 14296.7970888587. The cubic root of 204398407 is about 589.0595060959.

The spelling of 204398407 in words is "two hundred four million, three hundred ninety-eight thousand, four hundred seven".