489944261721029 has 2 divisors, whose sum is σ = 489944261721030. Its totient is φ = 489944261721028.

The previous prime is 489944261720989. The next prime is 489944261721053. The reversal of 489944261721029 is 920127162449984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467070979830625 + 22873281890404 = 21611825^2 + 4782602^2 .

It is a cyclic number.

It is not a de Polignac number, because 489944261721029 - 2¹⁶ = 489944261655493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489944261721029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489944261621029) 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, 244972130860514 + 244972130860515.

It is an arithmetic number, because the mean of its divisors is an integer number (244972130860515).

Almost surely, 2^{489944261721029} is an apocalyptic number.

It is an amenable number.

489944261721029 is a deficient number, since it is larger than the sum of its proper divisors (1).

489944261721029 is an equidigital number, since it uses as much as digits as its factorization.

489944261721029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125411328, while the sum is 68.

The spelling of 489944261721029 in words is "four hundred eighty-nine trillion, nine hundred forty-four billion, two hundred sixty-one million, seven hundred twenty-one thousand, twenty-nine".