320444249 has 2 divisors, whose sum is σ = 320444250. Its totient is φ = 320444248.

The previous prime is 320444141. The next prime is 320444263. The reversal of 320444249 is 942444023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257923600 + 62520649 = 16060^2 + 7907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320444249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320440249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160222124 + 160222125.

It is an arithmetic number, because the mean of its divisors is an integer number (160222125).

Almost surely, 2^320444249 is an apocalyptic number.

It is an amenable number.

320444249 is a deficient number, since it is larger than the sum of its proper divisors (1).

320444249 is an equidigital number, since it uses as much as digits as its factorization.

320444249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 320444249 is about 17900.9566504140. The cubic root of 320444249 is about 684.3067552697.

The spelling of 320444249 in words is "three hundred twenty million, four hundred forty-four thousand, two hundred forty-nine".