790

790 is a natural number that follows 789 and precedes 791. It is an even, composite, and square-free integer. Its prime factorization is 2 × 5 × 79, and its divisors are 1, 2, 5, 10, 79, 158, 395, and 790. The sum of its digits is 16, giving a digital root of 7. In modular terms, 790 is congruent to 0 modulo 2 and modulo 5.

In different bases, 790 is written as 1100010110 in binary, 1426 in octal, and 0x316 in hexadecimal. In Roman numerals it is represented as DCCXC.

From a scientific standpoint, wavelengths around 790 nanometers lie in the near-infrared region just beyond visible red light. This portion of the spectrum is used in infrared sensing and spectroscopy and is relevant to technologies such as remote sensing and some medical imaging techniques.

Historically, 790 CE falls in the early Middle Ages. As a calendar year, it is associated with the broader context of the post-classical world, including the Carolingian realm in parts of Western Europe, though detailed events for that exact year are sparsely documented.