Perhaps I have missed something but in several reference specs I see for the
Falcon 900LX, they refer to a max range of approximately 4,650 nm (NBAA 4 Pax IFR Range)
Dassault
The 900LX has a maximum range of 4,750 nm (8,800 km) and a maximum speed of Mach .84. It can take you from Geneva to Chicago, Mumbai to London City or Hong Kong to Sydney, nonstop, while consuming far less fuel than its competitors. In addition to airfield agility, the hallmark of trijet design, the 900LX allows more direct, over-water routing, an advantage that saves both time and fuel, while also enhancing safety.
Another reference
https://altivationaircraft.com/falcon-900lx/
Does the loading of 8 pax + ego's reduce the range by 900 nm?
IG