Since not much is known about Nihonium, most of the information is predicted. For example, its predicted oxidation states are -1, +1, +3, and +5. Some isotopes have an unusually long half-life of about 9.5 seconds( Nihonium 286). This could be because of a theoretical island of stablility with increased half-lives because they have closed nuclear shells.  It was first synthesized by the JINR in Dubna, and at Riken in Japan. 

Nihonium has no current uses because of its extreme radioactivity.