Whats this phone number? +846503799087?

This number called my cell phone earlier.I didnt answer because I didnt know the number,plus it was a very strange number.I tried to google it and got nothing.I tried reverse look up and got nothing.I took off the +84 and figured the area code was 650(California),google and reversed that,still nothing.Im not going to call it back either,may be some kind of phone scam.Does anyone know how to get info on this number? +846503799087Whats this phone number? +846503799087?
The + is international dailling and the country code 84 is Cambodia.Whats this phone number? +846503799087?
it looks like some kind of Japaneses phone number