530243489 has 2 divisors, whose sum is σ = 530243490. Its totient is φ = 530243488.

The previous prime is 530243423. The next prime is 530243491. The reversal of 530243489 is 984342035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287133025 + 243110464 = 16945^2 + 15592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-530243489 is a prime.

Together with 530243491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (530246489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265121744 + 265121745.

It is an arithmetic number, because the mean of its divisors is an integer number (265121745).

Almost surely, 2^530243489 is an apocalyptic number.

It is an amenable number.

530243489 is a deficient number, since it is larger than the sum of its proper divisors (1).

530243489 is an equidigital number, since it uses as much as digits as its factorization.

530243489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 530243489 is about 23027.0165023609. The cubic root of 530243489 is about 809.3911438351.

The spelling of 530243489 in words is "five hundred thirty million, two hundred forty-three thousand, four hundred eighty-nine".