I think you mean 4 x 105 .
That's 400,000 .
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The form for scientific notation is a*10b where 1 <= a < 10, and b is an integer (positive or negative).
That number already IS in standard notation.
1.17 x 10 to the 13th power in standard form is: 11,700,000,000,000
39,800,000,000
10 to the second power is = 100, so 287