422849173 has 2 divisors, whose sum is σ = 422849174. Its totient is φ = 422849172.

The previous prime is 422849171. The next prime is 422849183. The reversal of 422849173 is 371948224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240653169 + 182196004 = 15513^2 + 13498^2 .

It is a cyclic number.

It is not a de Polignac number, because 422849173 - 2¹ = 422849171 is a prime.

Together with 422849171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422849171) 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, 211424586 + 211424587.

It is an arithmetic number, because the mean of its divisors is an integer number (211424587).

Almost surely, 2^422849173 is an apocalyptic number.

It is an amenable number.

422849173 is a deficient number, since it is larger than the sum of its proper divisors (1).

422849173 is an equidigital number, since it uses as much as digits as its factorization.

422849173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 422849173 is about 20563.2967444425. The cubic root of 422849173 is about 750.5768439247.

The spelling of 422849173 in words is "four hundred twenty-two million, eight hundred forty-nine thousand, one hundred seventy-three".