To convert a number from scientific notation to standard form, you need to move the decimal point to the right or left depending on the exponent.
In this case, the number is 4.39 multiplied by 10 to the power of -6. The negative exponent tells us that we need to move the decimal point to the left.
To do this, count how many places you need to move the decimal point to the left. In this example, the exponent is -6, so you need to move the decimal point 6 places to the left.
Starting with the number 4.39, move the decimal point 6 places to the left:
0.00000439
Therefore, 4.39 × 10^(-6) is equal to 0.00000439 in standard form.