304009109 has 2 divisors, whose sum is σ = 304009110. Its totient is φ = 304009108.

The previous prime is 304009099. The next prime is 304009141. The reversal of 304009109 is 901900403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303526084 + 483025 = 17422^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 304009109 - 2⁴ = 304009093 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304009169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152004554 + 152004555.

It is an arithmetic number, because the mean of its divisors is an integer number (152004555).

Almost surely, 2^304009109 is an apocalyptic number.

It is an amenable number.

304009109 is a deficient number, since it is larger than the sum of its proper divisors (1).

304009109 is an equidigital number, since it uses as much as digits as its factorization.

304009109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 304009109 is about 17435.8569906959. The cubic root of 304009109 is about 672.4017971335.

The spelling of 304009109 in words is "three hundred four million, nine thousand, one hundred nine".