489784644841 has 2 divisors, whose sum is σ = 489784644842. Its totient is φ = 489784644840.

The previous prime is 489784644823. The next prime is 489784644913. The reversal of 489784644841 is 148446487984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 487244484841 + 2540160000 = 698029^2 + 50400^2 .

It is a cyclic number.

It is not a de Polignac number, because 489784644841 - 2¹⁷ = 489784513769 is a prime.

It is not a weakly prime, because it can be changed into another prime (489784644341) 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, 244892322420 + 244892322421.

It is an arithmetic number, because the mean of its divisors is an integer number (244892322421).

Almost surely, 2^489784644841 is an apocalyptic number.

It is an amenable number.

489784644841 is a deficient number, since it is larger than the sum of its proper divisors (1).

489784644841 is an equidigital number, since it uses as much as digits as its factorization.

489784644841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 198180864, while the sum is 67.

The spelling of 489784644841 in words is "four hundred eighty-nine billion, seven hundred eighty-four million, six hundred forty-four thousand, eight hundred forty-one".