Peterson Number in Java

import java.util.Scanner;

public class PetersonNumber {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a number: ");
        int number = scanner.nextInt();
        scanner.close();

        if (isPetersonNumber(number)) {
            System.out.println(number + " is a Peterson number.");
        } else {
            System.out.println(number + " is not a Peterson number.");
        }
    }

    public static boolean isPetersonNumber(int number) {
        int originalNumber = number;
        int numDigits = countDigits(number);
        int sum = 0;

        while (number > 0) {
            int digit = number % 10;
            sum += Math.pow(digit, numDigits);
            number /= 10;
        }

        return sum == originalNumber;
    }

    public static int countDigits(int number) {
        int count = 0;
        while (number > 0) {
            count++;
            number /= 10;
        }
        return count;
    }
}