489821573 has 2 divisors, whose sum is σ = 489821574. Its totient is φ = 489821572.

The previous prime is 489821551. The next prime is 489821581. The reversal of 489821573 is 375128984.

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., 458259649 + 31561924 = 21407^2 + 5618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489821573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489821533) 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, 244910786 + 244910787.

It is an arithmetic number, because the mean of its divisors is an integer number (244910787).

Almost surely, 2^489821573 is an apocalyptic number.

It is an amenable number.

489821573 is a deficient number, since it is larger than the sum of its proper divisors (1).

489821573 is an equidigital number, since it uses as much as digits as its factorization.

489821573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 489821573 is about 22131.9129991061. The cubic root of 489821573 is about 788.2778127739.

The spelling of 489821573 in words is "four hundred eighty-nine million, eight hundred twenty-one thousand, five hundred seventy-three".