320048489 has 2 divisors, whose sum is σ = 320048490. Its totient is φ = 320048488.

The previous prime is 320048471. The next prime is 320048537. The reversal of 320048489 is 984840023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240250000 + 79798489 = 15500^2 + 8933^2 .

It is a cyclic number.

It is not a de Polignac number, because 320048489 - 2¹² = 320044393 is a prime.

It is a super-2 number, since 2×320048489² = 204862070622366242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320048459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160024244 + 160024245.

It is an arithmetic number, because the mean of its divisors is an integer number (160024245).

Almost surely, 2^320048489 is an apocalyptic number.

It is an amenable number.

320048489 is a deficient number, since it is larger than the sum of its proper divisors (1).

320048489 is an equidigital number, since it uses as much as digits as its factorization.

320048489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 320048489 is about 17889.8990774124. The cubic root of 320048489 is about 684.0249248524.

The spelling of 320048489 in words is "three hundred twenty million, forty-eight thousand, four hundred eighty-nine".