Q: What is the digital root of 840,021,439

 A: 4

Why is 4 the digital root of the number 840,021,439?

The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.

How do you calculate the digital root of 840,021,439?


Split the number up and add each digit together:


8 + 4 + 0 + 0 + 2 + 1 + 4 + 3 + 9 = 31

If the answer is more than one digit, you would add each digit of the answer together again:

3 + 1 = 4

What is the digital root of number 840,021,439?

Answer: 4


More Examples

Number 840,021,437840,021,438840,021,440840,021,441
Digital Root 2356

Explore more about the number 840,021,439:


Ask a Question