9139

9139 is a four-digit positive integer. It is the product of the primes 13, 19, and 37, making it a composite and squarefree number. As a sphenic number, it has exactly eight positive divisors.

The divisors are 1, 13, 19, 37, 247 (13×19), 481 (13×37), 703 (19×37), and 9139. The Euler totient φ(9139) equals (13−1)(19−1)(37−1) = 12×18×36 = 7776. The number is divisible by 13, 19, and 37, i.e., 9139 ≡ 0 mod 13, 0 mod 19, and 0 mod 37.

In other bases, 9139 is 10001110110011 in binary, 21663 in octal, and 0x23B3 in hexadecimal.

The decimal digit sum is 22, so it is not divisible by 3 or 9. The number is odd.

Because it is a product of three distinct primes, 9139 is classified as a sphenic number. This classification highlights its factor structure and its eight divisors, without implying a broader special significance beyond standard number-theoretic properties.