489332813 has 2 divisors, whose sum is σ = 489332814. Its totient is φ = 489332812.

The previous prime is 489332801. The next prime is 489332887. The reversal of 489332813 is 318233984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375313129 + 114019684 = 19373^2 + 10678^2 .

It is a cyclic number.

It is not a de Polignac number, because 489332813 - 2¹⁸ = 489070669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489332513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244666406 + 244666407.

It is an arithmetic number, because the mean of its divisors is an integer number (244666407).

Almost surely, 2^489332813 is an apocalyptic number.

It is an amenable number.

489332813 is a deficient number, since it is larger than the sum of its proper divisors (1).

489332813 is an equidigital number, since it uses as much as digits as its factorization.

489332813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 41.

The square root of 489332813 is about 22120.8682695775. The cubic root of 489332813 is about 788.0155357163.

The spelling of 489332813 in words is "four hundred eighty-nine million, three hundred thirty-two thousand, eight hundred thirteen".