Pam is a shortened form of Pamela, originating from the Latin phrase 'pan maria', meaning "all sweet". It gained popularity through Richardson's 1740 novel, "Pamela; or, Virtue Rewarded", and has been used as an independent given name since the mid-20th century. Pam is often associated with a friendly personality due to its casual sound, though it doesn't have specific traits attached to it. It remains popular worldwide, particularly in English-speaking countries, despite recent declines in popularity. In numerology, Pam corresponds to the number 3, signifying creativity and communication.