320847049 has 2 divisors, whose sum is σ = 320847050. Its totient is φ = 320847048.

The previous prime is 320847019. The next prime is 320847061. The reversal of 320847049 is 940748023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166590649 + 154256400 = 12907^2 + 12420^2 .

It is a cyclic number.

It is not a de Polignac number, because 320847049 - 2¹⁷ = 320715977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320846999 and 320847017.

It is not a weakly prime, because it can be changed into another prime (320847019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160423524 + 160423525.

It is an arithmetic number, because the mean of its divisors is an integer number (160423525).

Almost surely, 2^320847049 is an apocalyptic number.

It is an amenable number.

320847049 is a deficient number, since it is larger than the sum of its proper divisors (1).

320847049 is an equidigital number, since it uses as much as digits as its factorization.

320847049 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 320847049 is about 17912.2039124168. The cubic root of 320847049 is about 684.5933608695.

The spelling of 320847049 in words is "three hundred twenty million, eight hundred forty-seven thousand, forty-nine".