852442289 has 2 divisors, whose sum is σ = 852442290. Its totient is φ = 852442288.

The previous prime is 852442249. The next prime is 852442303. The reversal of 852442289 is 982244258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 576384064 + 276058225 = 24008^2 + 16615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-852442289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (852442219) 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, 426221144 + 426221145.

It is an arithmetic number, because the mean of its divisors is an integer number (426221145).

Almost surely, 2^852442289 is an apocalyptic number.

It is an amenable number.

852442289 is a deficient number, since it is larger than the sum of its proper divisors (1).

852442289 is an equidigital number, since it uses as much as digits as its factorization.

852442289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640, while the sum is 44.

The square root of 852442289 is about 29196.6143413924. The cubic root of 852442289 is about 948.1746256348.

The spelling of 852442289 in words is "eight hundred fifty-two million, four hundred forty-two thousand, two hundred eighty-nine".