422783819 has 2 divisors, whose sum is σ = 422783820. Its totient is φ = 422783818.

The previous prime is 422783789. The next prime is 422783821. The reversal of 422783819 is 918387224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422783819 - 2⁸ = 422783563 is a prime.

It is a super-2 number, since 2×422783819² = 357492315216449522, which contains 22 as substring.

Together with 422783821, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422783819.

It is not a weakly prime, because it can be changed into another prime (422783849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211391909 + 211391910.

It is an arithmetic number, because the mean of its divisors is an integer number (211391910).

Almost surely, 2^422783819 is an apocalyptic number.

422783819 is a deficient number, since it is larger than the sum of its proper divisors (1).

422783819 is an equidigital number, since it uses as much as digits as its factorization.

422783819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 422783819 is about 20561.7075895948. The cubic root of 422783819 is about 750.5381731413.

The spelling of 422783819 in words is "four hundred twenty-two million, seven hundred eighty-three thousand, eight hundred nineteen".