320849 has 4 divisors (see below), whose sum is σ = 325440. Its totient is φ = 316260.

The previous prime is 320843. The next prime is 320851. The reversal of 320849 is 948023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948023 = 211 ⋅4493.

It is a cyclic number.

It is not a de Polignac number, because 320849 - 2⁴ = 320833 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320849.

It is not an unprimeable number, because it can be changed into a prime (320843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2189 + ... + 2330.

It is an arithmetic number, because the mean of its divisors is an integer number (81360).

2³²⁰⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

320849 is a deficient number, since it is larger than the sum of its proper divisors (4591).

320849 is an equidigital number, since it uses as much as digits as its factorization.

320849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4590.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 320849 is about 566.4353449424. The cubic root of 320849 is about 68.4594748487.

The spelling of 320849 in words is "three hundred twenty thousand, eight hundred forty-nine".