"Get Your Number" is a song by American singer and 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. Lyrically, the song features the protagonist persistently asking for the phone number of an individual at a club.

The song received generally mixed reviews from music critics at the time of its release, with many both praising and criticizing the inclusion of the sample, as well as the song's production and lyrical content. "Get Your Number" was released as the third single throughout Europe, where it peaked within the top-ten in Finland, the Netherlands and the United Kingdom, where it was sold as a double A-side along with "Shake It Off". Similarly, the song found release in Australasia in early 2006, as the fifth single from the album, and peaked in the top-twenty in Australia, and at number thirty-four in New Zealand.

The single's music video was directed by Jake Nava, who also directed Carey's video for "Shake It Off". It was filmed in Los Angeles on September 1 and 2, 2005 and features Jermaine Dupri as the video's secondary artist, while Michael Ealy, plays Carey's love interest at the club. The main setting is a nightclub where Carey slips her phone number to a man, one digit at a time. Carey is shown in a variety of locations wearing, amongst other outfits, a yellow latex dress. Dupri makes a guest appearance as a man receiving the numbers of three girls in the club.

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