Yes some cultures do have unlucky numbers.
French is 9
America,England,Australia and some more is 13
Russia is 6
German is 4
China is 8
New Zealand is 3
I'm pretty sure theres more but i dont know them
Actually the number 8 in China is considered to be lucky, due to the sound is similar to words the stand for good fortune.
However in most East Asian countries the number 4 is considered unlucky as the way it's read "shi" is the same sound as the symbol that stands for "death".
it's pronounced "si", no "shi"