Q: What is the digital root of 2,400,399

 A: 9

Why is 9 the digital root of the number 2,400,399?

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 2,400,399?


Split the number up and add each digit together:


2 + 4 + 0 + 0 + 3 + 9 + 9 = 27

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

2 + 7 = 9

What is the digital root of number 2,400,399?

Answer: 9


More Examples

Number 2,400,3972,400,3982,400,4002,400,401
Digital Root 7812

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