Thanks for your marvelous review and I'm glad you've had the chance to see it. You have managed to include some wonderful terminology some of which is completely new to me "Necrorealist movement" for one which is a wonderfully descriptive term. 

It has been a while since I've seen 4 but I do remember the number constantly figuring throughout the film, to list even a few of the times would neccessitate spoilers which I'm glad to say are virtually non-existent in your review.

This film unfortunately didn't get a theatrical release here but I would definitely reccomend 4 (Chetyre) to everyone as an interesting albeit at times slightly disturbing look at post communist Russia.

One point that is clearly raised, for the people who've lived long lives under a state that virtually controls their whole lives basically making them institutionalised, even a modicum amount of freedom is too much for them to cope with. They simply have no idea how to deal with it. 

Cheers Trev.