422391329 has 2 divisors, whose sum is σ = 422391330. Its totient is φ = 422391328.

The previous prime is 422391317. The next prime is 422391353. The reversal of 422391329 is 923193224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416976400 + 5414929 = 20420^2 + 2327^2 .

It is a cyclic number.

It is not a de Polignac number, because 422391329 - 2²⁴ = 405614113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422391379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211195664 + 211195665.

It is an arithmetic number, because the mean of its divisors is an integer number (211195665).

Almost surely, 2^422391329 is an apocalyptic number.

It is an amenable number.

422391329 is a deficient number, since it is larger than the sum of its proper divisors (1).

422391329 is an equidigital number, since it uses as much as digits as its factorization.

422391329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 422391329 is about 20552.1611758958. The cubic root of 422391329 is about 750.3058479998.

The spelling of 422391329 in words is "four hundred twenty-two million, three hundred ninety-one thousand, three hundred twenty-nine".