The number "39" is an integer that follows 38 and precedes 40. It is an odd number and can be expressed as the sum of three consecutive prime numbers: 13, 13, and 13. In Roman numerals, it is represented as XXXIX. In mathematics, 39 is considered a semiprime because it is the product of two prime numbers, specifically 3 and 13. Additionally, in the context of temperature, 39 degrees Celsius is often associated with a mild fever in humans. The number also appears in various cultural references, such as in sports jersey numbers and popular media.