320272489 has 2 divisors, whose sum is σ = 320272490. Its totient is φ = 320272488.

The previous prime is 320272451. The next prime is 320272543. The reversal of 320272489 is 984272023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296115264 + 24157225 = 17208^2 + 4915^2 .

It is a cyclic number.

It is not a de Polignac number, because 320272489 - 2⁹ = 320271977 is a prime.

It is not a weakly prime, because it can be changed into another prime (320272289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160136244 + 160136245.

It is an arithmetic number, because the mean of its divisors is an integer number (160136245).

Almost surely, 2^320272489 is an apocalyptic number.

It is an amenable number.

320272489 is a deficient number, since it is larger than the sum of its proper divisors (1).

320272489 is an equidigital number, since it uses as much as digits as its factorization.

320272489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 320272489 is about 17896.1584984041. The cubic root of 320272489 is about 684.1844692715.

The spelling of 320272489 in words is "three hundred twenty million, two hundred seventy-two thousand, four hundred eighty-nine".