Without the decimal point, there is only a significant figure.
4000000/1000 = 4000
4000000 minutes = 6666,66... hours = 2777.77... days
Answer: 4000000 m² = 4 km²
3
The significants of macroeonomics
4000000
4000000
4000000
4000000
600
4000000 pennies is exactly 4000000 pennies.
4000000