489984899846369 has 2 divisors, whose sum is σ = 489984899846370. Its totient is φ = 489984899846368.

The previous prime is 489984899846357. The next prime is 489984899846411. The reversal of 489984899846369 is 963648998489984.

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., 397153601836369 + 92831298010000 = 19928713^2 + 9634900^2 .

It is a cyclic number.

It is not a de Polignac number, because 489984899846369 - 2¹⁶ = 489984899780833 is a prime.

It is a super-2 number, since 2×489984899846369² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (489984899846569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244992449923184 + 244992449923185.

It is an arithmetic number, because the mean of its divisors is an integer number (244992449923185).

Almost surely, 2^{489984899846369} is an apocalyptic number.

It is an amenable number.

489984899846369 is a deficient number, since it is larger than the sum of its proper divisors (1).

489984899846369 is an equidigital number, since it uses as much as digits as its factorization.

489984899846369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1671768834048, while the sum is 104.

The spelling of 489984899846369 in words is "four hundred eighty-nine trillion, nine hundred eighty-four billion, eight hundred ninety-nine million, eight hundred forty-six thousand, three hundred sixty-nine".