"Get Your Number" is a song by American singer-songwriter Mariah Carey. It was written by Carey, Jermaine Dupri, Johntá Austin and Bryan-Michael Cox, and produced by the former two and LRoc. It was released as the third international single from Carey's tenth studio album, The Emancipation of Mimi (2005). The song is built around a sample of "Just an Illusion" (1982) by British band Imagination. Due to the inclusion of the sample, several other writers are credited as songwriters.