422423993809 has 2 divisors, whose sum is σ = 422423993810. Its totient is φ = 422423993808.

The previous prime is 422423993753. The next prime is 422423993879. The reversal of 422423993809 is 908399324224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245721464209 + 176702529600 = 495703^2 + 420360^2 .

It is a cyclic number.

It is not a de Polignac number, because 422423993809 - 2²³ = 422415605201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422423993809.

It is not a weakly prime, because it can be changed into another prime (422423993879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211211996904 + 211211996905.

It is an arithmetic number, because the mean of its divisors is an integer number (211211996905).

Almost surely, 2^422423993809 is an apocalyptic number.

It is an amenable number.

422423993809 is a deficient number, since it is larger than the sum of its proper divisors (1).

422423993809 is an equidigital number, since it uses as much as digits as its factorization.

422423993809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 422423993809 in words is "four hundred twenty-two billion, four hundred twenty-three million, nine hundred ninety-three thousand, eight hundred nine".