442200289 has 2 divisors, whose sum is σ = 442200290. Its totient is φ = 442200288.

The previous prime is 442200271. The next prime is 442200331. The reversal of 442200289 is 982002244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425060689 + 17139600 = 20617^2 + 4140^2 .

It is a cyclic number.

It is not a de Polignac number, because 442200289 - 2⁹ = 442199777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442200289.

It is not a weakly prime, because it can be changed into another prime (442200229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221100144 + 221100145.

It is an arithmetic number, because the mean of its divisors is an integer number (221100145).

Almost surely, 2^442200289 is an apocalyptic number.

It is an amenable number.

442200289 is a deficient number, since it is larger than the sum of its proper divisors (1).

442200289 is an equidigital number, since it uses as much as digits as its factorization.

442200289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 442200289 is about 21028.5588902331. The cubic root of 442200289 is about 761.8562020408.

The spelling of 442200289 in words is "four hundred forty-two million, two hundred thousand, two hundred eighty-nine".