An Armstrong number (also known as a narcissistic number) is a number that is equal to the sum of its own digits each raised to the power of the number of digits. For example, 153 is an Armstrong number because $1^3 + 5^3 + 3^3 = 153$

Here's a simple Python program to check if a number is an Armstrong number:

```
def is_armstrong(number):
# Convert number to string to easily iterate over digits
digits = str(number)
num_digits = len(digits)
# Calculate the sum of digits raised to the power of the number of digits
sum_of_powers = sum(int(digit) ** num_digits for digit in digits)
return sum_of_powers == number
# Get user input
try:
user_input = int(input("Enter a number: "))
if is_armstrong(user_input):
print(f"{user_input} is an Armstrong number.")
else:
print(f"{user_input} is not an Armstrong number.")
except ValueError:
print("Please enter a valid integer.")
```

## How It Works:

- The function
`is_armstrong`

takes a number as input and converts it to a string to easily iterate through each digit. - It calculates the number of digits and then computes the sum of each digit raised to the power of the total number of digits.
- Finally, it compares the calculated sum to the original number to check if it’s an Armstrong number.

## Running the Program:

- Copy the code into a Python environment (like IDLE, Jupyter Notebook, or any online Python compiler).
- Run the program and enter a number when prompted. It will tell you whether the number is an Armstrong number or not.

**Thanks**

Tags
Python