320929 has 12 divisors (see below), whose sum is σ = 390144. Its totient is φ = 258552.

The previous prime is 320927. The next prime is 320939. The reversal of 320929 is 929023.

It is not a de Polignac number, because 320929 - 2¹ = 320927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2464 + ... + 2590.

It is an arithmetic number, because the mean of its divisors is an integer number (32512).

2³²⁰⁹²⁹ is an apocalyptic number.

It is an amenable number.

320929 is a deficient number, since it is larger than the sum of its proper divisors (69215).

320929 is a wasteful number, since it uses less digits than its factorization.

320929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 320929 is about 566.5059576033. The cubic root of 320929 is about 68.4651642362.

The spelling of 320929 in words is "three hundred twenty thousand, nine hundred twenty-nine".