CCCVC seems like a logical way to write 395 but unfortunately it breaks one of the rules of writing Roman numerals in that V should not preceed anything higher in value than 50 (L). So the correct way to write 395 is CCCXCV.
CCCVC
It is 395 054 300.
395 is an odd number
393 395 397
234 395
573
There is nu number before another because the set of numbers is infinitely dense. If you claim that x1 is the number before 395, then what about x2 = (x1 + 395)/2? Then x1 < x2 < 395 that is, x2 is before 395 and nearer to it. And then what about x3 = (x2 + 395)/2 and then x4 etc defined similarly?
395*163/100 = 643.85
397
395/16 = 2411/16
234 395
300