Enter Number

Calculate the digit sum of 497

Calculate the reduced digit sum of 497

Add up 3 digits of 497:

Digit Sum → 4 + 9 + 7 = 20

Since our digit sum > 9:
repeat this process to get the reduced digit sum:
Our new number to evaluate is 20

Add up 2 digits of 20:

Digit Sum → 2 + 0 = 2

Since our digit sum ≤ 9:
we have our reduced digit sum

Final Answer


Digit Sum = 20
Reduced Digit Sum = 2