329

329 is an integer. In mathematics, it factors as 7 × 47 and is therefore composite. It is odd and not a perfect square or cube.

In numeral systems, 329 is written CCCXXIX in Roman numerals; in binary it is 1010010012 and in hexadecimal 0x149. The sum of its digits is 14, and modulo 3 it is 2.

The 329th day of a common year is November 25; in a leap year it is November 24. This places it toward the end of the calendar year in both cases.

In astronomy, 329 Svea is a main-belt asteroid designated by the number 329. Minor planets are numbered in order of their confirmed discovery, so 329 Svea represents one such object in the asteroid belt.

In music, frequencies near 329 Hz correspond to the approximate pitch of E4 (the exact equal-temperament E4 is 329.63 Hz). This close proximity means 329 Hz is sometimes used as a rough reference pitch in discussions of musical tone.