422847197 has 6 divisors (see below), whose sum is σ = 430978842. Its totient is φ = 414866192.

The previous prime is 422847193. The next prime is 422847199. The reversal of 422847197 is 791748224.

It can be written as a sum of positive squares in 3 ways, for example, as 240219001 + 182628196 = 15499^2 + 13514^2 .

It is not a de Polignac number, because 422847197 - 2² = 422847193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422847193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72458 + ... + 78075.

It is an arithmetic number, because the mean of its divisors is an integer number (71829807).

Almost surely, 2^422847197 is an apocalyptic number.

It is an amenable number.

422847197 is a deficient number, since it is larger than the sum of its proper divisors (8131645).

422847197 is an equidigital number, since it uses as much as digits as its factorization.

422847197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150639 (or 150586 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 422847197 is about 20563.2486976159. The cubic root of 422847197 is about 750.5756747591.

The spelling of 422847197 in words is "four hundred twenty-two million, eight hundred forty-seven thousand, one hundred ninety-seven".