Python Program to Check Armstrong (Narcissistic) Number

This python programs check whether a given positive integer number is Armstrong number or not. Armstrong number is also known as Narcissistic number.

Python Source Code: Check Armstrong or Narcissistic

# Python program to check Armstrong

# Function to count digit in number
def count_digit(n):
    count = 0
    while n:
        n //= 10
        count += 1
    return count

# Function to check Armstrong
def check_armstrong(n):
    number_copy = n
    arm_sum = 0
    digit = count_digit(n)
    while n:
        remainder = n%10
        arm_sum += remainder**digit
        n //= 10

    return arm_sum == number_copy

# Reading number
number = int(input('Enter number: '))

# Making decision
if check_armstrong(number):
    print('%d is ARMSTRONG.' %(number))
else:
    print('%d is NOT ARMSTRONG.' %(number))

Check Armstrong Python Output

Run 1:
--------------
Enter number: 8208
8208 is ARMSTRONG.

Run 2:
--------------
Enter number: 1328
1328 is NOT ARMSTRONG.