Q: How Many Digits in the Number 400,456,428?

 A: The number 400,456,428 has 9 digits.

How does 400,456,428 have 9 digits?

You simply count the number of digits from the first number to the last. Like this:


400456428
Digit # 123456789

What are the number of digits of the numbers near 400,456,428?

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