Air carrier Captain reported a near miss with a UAS during final approach.

Narrative

On approach to Runway 24L at about 400 feet (less than 500 feet I recall) we had an encounter that appeared to be a drone close call. From left to right; 11 o'clock it appeared moving to 5 o'clock in front of the plane. At first my brain said it's a plastic bag from the color and texture. Nothing moved on it like a birds wings would. It was a light grey looking drone. That was in view for maybe 1-2 seconds. No noise was heard that would indicate an impact; but it was very close; just under the First Officer (FO) side of the nose. After landing we notified the tower of the encounter. We gave a statement to the airport ops people. Called dispatch to talk with maintenance (was on hold for 15 minutes but the call dropped). The FO called the Duty Pilot and they talked while I was on hold. Duty Pilot said call back in 10 minutes or so because maintenance wanted to send someone over. Called the duty pilot back a few later to talk and he said they had no idea about this drone encounter. I asked what I should do and he said if there is no visible damage I should 'truck on'. I wasn't sure on that so I called maintenance directly and they wanted the plane inspected before departure. I let them know I had to go through customs and couldn't tell the crew so they would need to be notified so they wouldn't leave before the inspection. The airport authority said a drone can fly below 400 ft. AGL but I'm not sure if that's accurate within a certain distance of the airport. But they weren't able to detect it with their radar. Not sure how to avoid this in the future.