304004219 has 2 divisors, whose sum is σ = 304004220. Its totient is φ = 304004218.

The previous prime is 304004213. The next prime is 304004249. The reversal of 304004219 is 912400403.

It is a weak prime.

It is an emirp because it is prime and its reverse (912400403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 304004219 - 2⁴ = 304004203 is a prime.

It is a super-2 number, since 2×304004219² = 184837130339599922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 304004194 and 304004203.

It is not a weakly prime, because it can be changed into another prime (304004213) 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 as a sum of consecutive naturals, namely, 152002109 + 152002110.

It is an arithmetic number, because the mean of its divisors is an integer number (152002110).

Almost surely, 2^304004219 is an apocalyptic number.

304004219 is a deficient number, since it is larger than the sum of its proper divisors (1).

304004219 is an equidigital number, since it uses as much as digits as its factorization.

304004219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 304004219 is about 17435.7167618656. The cubic root of 304004219 is about 672.3981919099.

The spelling of 304004219 in words is "three hundred four million, four thousand, two hundred nineteen".