304144209 has 6 divisors (see below), whose sum is σ = 439319426. Its totient is φ = 202762800.

The previous prime is 304144189. The next prime is 304144223. The reversal of 304144209 is 902441403.

It can be written as a sum of positive squares in only one way, i.e., 267420609 + 36723600 = 16353^2 + 6060^2 .

It is not a de Polignac number, because 304144209 - 2⁵ = 304144177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304144409) 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 5 ways as a sum of consecutive naturals, for example, 16896892 + ... + 16896909.

Almost surely, 2^304144209 is an apocalyptic number.

It is an amenable number.

304144209 is a deficient number, since it is larger than the sum of its proper divisors (135175217).

304144209 is a wasteful number, since it uses less digits than its factorization.

304144209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33793807 (or 33793804 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 304144209 is about 17439.7307605364. The cubic root of 304144209 is about 672.5013862872.

The spelling of 304144209 in words is "three hundred four million, one hundred forty-four thousand, two hundred nine".