489569649097 has 2 divisors, whose sum is σ = 489569649098. Its totient is φ = 489569649096.

The previous prime is 489569649089. The next prime is 489569649113. The reversal of 489569649097 is 790946965984.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458964245961 + 30605403136 = 677469^2 + 174944^2 .

It is a cyclic number.

It is not a de Polignac number, because 489569649097 - 2³ = 489569649089 is a prime.

It is not a weakly prime, because it can be changed into another prime (489569649007) 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, 244784824548 + 244784824549.

It is an arithmetic number, because the mean of its divisors is an integer number (244784824549).

Almost surely, 2^489569649097 is an apocalyptic number.

It is an amenable number.

489569649097 is a deficient number, since it is larger than the sum of its proper divisors (1).

489569649097 is an equidigital number, since it uses as much as digits as its factorization.

489569649097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058158080, while the sum is 76.

The spelling of 489569649097 in words is "four hundred eighty-nine billion, five hundred sixty-nine million, six hundred forty-nine thousand, ninety-seven".