304302989 has 2 divisors, whose sum is σ = 304302990. Its totient is φ = 304302988.

The previous prime is 304302979. The next prime is 304303033. The reversal of 304302989 is 989203403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211469764 + 92833225 = 14542^2 + 9635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304302989 is a prime.

It is a super-2 number, since 2×304302989² = 185200618228668242, which contains 22 as substring.

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 (304302979) 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 as a sum of consecutive naturals, namely, 152151494 + 152151495.

It is an arithmetic number, because the mean of its divisors is an integer number (152151495).

Almost surely, 2^304302989 is an apocalyptic number.

It is an amenable number.

304302989 is a deficient number, since it is larger than the sum of its proper divisors (1).

304302989 is an equidigital number, since it uses as much as digits as its factorization.

304302989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 304302989 is about 17444.2824157373. The cubic root of 304302989 is about 672.6183934948.

The spelling of 304302989 in words is "three hundred four million, three hundred two thousand, nine hundred eighty-nine".