320350489 has 2 divisors, whose sum is σ = 320350490. Its totient is φ = 320350488.

The previous prime is 320350453. The next prime is 320350523. The reversal of 320350489 is 984053023.

It is a happy number.

It is an a-pointer prime, because the next prime (320350523) can be obtained adding 320350489 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201867264 + 118483225 = 14208^2 + 10885^2 .

It is a cyclic number.

It is not a de Polignac number, because 320350489 - 2¹⁵ = 320317721 is a prime.

It is not a weakly prime, because it can be changed into another prime (320350439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160175244 + 160175245.

It is an arithmetic number, because the mean of its divisors is an integer number (160175245).

Almost surely, 2^320350489 is an apocalyptic number.

It is an amenable number.

320350489 is a deficient number, since it is larger than the sum of its proper divisors (1).

320350489 is an equidigital number, since it uses as much as digits as its factorization.

320350489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 320350489 is about 17898.3376043699. The cubic root of 320350489 is about 684.2400074550.

The spelling of 320350489 in words is "three hundred twenty million, three hundred fifty thousand, four hundred eighty-nine".