320499 has 12 divisors (see below), whose sum is σ = 468000. Its totient is φ = 211344.

The previous prime is 320483. The next prime is 320513. The reversal of 320499 is 994023.

It is not a de Polignac number, because 320499 - 2⁴ = 320483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320449) 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, 1222 + ... + 1460.

It is an arithmetic number, because the mean of its divisors is an integer number (39000).

2³²⁰⁴⁹⁹ is an apocalyptic number.

320499 is a deficient number, since it is larger than the sum of its proper divisors (147501).

320499 is a wasteful number, since it uses less digits than its factorization.

320499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 320499 is about 566.1263109943. The cubic root of 320499 is about 68.4345726527.

It can be divided in two parts, 3 and 20499, that added together give a palindrome (20502).

The spelling of 320499 in words is "three hundred twenty thousand, four hundred ninety-nine".