304022489 has 2 divisors, whose sum is σ = 304022490. Its totient is φ = 304022488.

The previous prime is 304022479. The next prime is 304022501. The reversal of 304022489 is 984220403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303979225 + 43264 = 17435^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 304022489 - 2⁸ = 304022233 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (304022419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152011244 + 152011245.

It is an arithmetic number, because the mean of its divisors is an integer number (152011245).

Almost surely, 2^304022489 is an apocalyptic number.

It is an amenable number.

304022489 is a deficient number, since it is larger than the sum of its proper divisors (1).

304022489 is an equidigital number, since it uses as much as digits as its factorization.

304022489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 304022489 is about 17436.2406785408. The cubic root of 304022489 is about 672.4116615354.

The spelling of 304022489 in words is "three hundred four million, twenty-two thousand, four hundred eighty-nine".