Which numbers do the Japanese consider unlucky?

maybe some of the really superstitious skip their 49th birthday! some of our American hotels don't have a 13th floor or room number 666.

In France houses are numbered 12a and 12b

i wonder who'd attending a party of someone's 49'th party :)

Player #29089582, Don't be silly, a Japanese would still attend someone's 49th birthday party but this influences their gift choices for the person

shi ku, they have done that during the war, unluckily they lost and surrendered.

Sometimes they just skip the 4 and use 3A 👀😬

Player #29089582, More heart breaking is skipping a child's 13th birthday party in the west. Poor kid