The number is debatable, but almost certainly larger than that, especially if you count the cancer deaths, which are still occurring. And it also rendered an area larger than the state of Connecticutt uninhabitable for the foreseeable future. If you are trying to say that Chernobyl wasn't a big deal, that's ridiculous.
Michale Crighton gives gives the number as 4000
However, since folks are living in Hiroshima and Nagasaki now, I think your worries about"uninhabitable for the foreseeable future" are overblown.