422307289 has 2 divisors, whose sum is σ = 422307290. Its totient is φ = 422307288.

The previous prime is 422307269. The next prime is 422307293. The reversal of 422307289 is 982703224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420578064 + 1729225 = 20508^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 422307289 - 2²⁷ = 288089561 is a prime.

It is not a weakly prime, because it can be changed into another prime (422307229) 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, 211153644 + 211153645.

It is an arithmetic number, because the mean of its divisors is an integer number (211153645).

Almost surely, 2^422307289 is an apocalyptic number.

It is an amenable number.

422307289 is a deficient number, since it is larger than the sum of its proper divisors (1).

422307289 is an equidigital number, since it uses as much as digits as its factorization.

422307289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 422307289 is about 20550.1165203509. The cubic root of 422307289 is about 750.2560838107.

The spelling of 422307289 in words is "four hundred twenty-two million, three hundred seven thousand, two hundred eighty-nine".