### Instruction: Round 3967149.1587234 to the nearest integer.### Response: To round a number to the nearest integer, I need to look at the digit after the decimal point and see if it is 5 or more, or less than 5.
If it is 5 or more, I round up by adding 1 to the integer part and dropping the decimal part.
If it is less than 5, I round down by keeping the integer part and dropping the decimal part.
In this case, the digit after the decimal point is 1, which is less than 5.
So I round down by keeping 3967149 and dropping the rest.
The answer is 3967149.