422428793 has 2 divisors, whose sum is σ = 422428794. Its totient is φ = 422428792.

The previous prime is 422428789. The next prime is 422428813. The reversal of 422428793 is 397824224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262861369 + 159567424 = 16213^2 + 12632^2 .

It is a cyclic number.

It is not a de Polignac number, because 422428793 - 2² = 422428789 is a prime.

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 422428793.

It is not a weakly prime, because it can be changed into another prime (422421793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211214396 + 211214397.

It is an arithmetic number, because the mean of its divisors is an integer number (211214397).

Almost surely, 2^422428793 is an apocalyptic number.

It is an amenable number.

422428793 is a deficient number, since it is larger than the sum of its proper divisors (1).

422428793 is an equidigital number, since it uses as much as digits as its factorization.

422428793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 41.

The square root of 422428793 is about 20553.0725926806. The cubic root of 422428793 is about 750.3280301370.

The spelling of 422428793 in words is "four hundred twenty-two million, four hundred twenty-eight thousand, seven hundred ninety-three".