489584749 has 2 divisors, whose sum is σ = 489584750. Its totient is φ = 489584748.

The previous prime is 489584741. The next prime is 489584779. The reversal of 489584749 is 947485984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404613225 + 84971524 = 20115^2 + 9218^2 .

It is a cyclic number.

It is not a de Polignac number, because 489584749 - 2³ = 489584741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 489584693 and 489584702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489584741) 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, 244792374 + 244792375.

It is an arithmetic number, because the mean of its divisors is an integer number (244792375).

Almost surely, 2^489584749 is an apocalyptic number.

It is an amenable number.

489584749 is a deficient number, since it is larger than the sum of its proper divisors (1).

489584749 is an equidigital number, since it uses as much as digits as its factorization.

489584749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 58.

The square root of 489584749 is about 22126.5620691512. The cubic root of 489584749 is about 788.1507507241.

The spelling of 489584749 in words is "four hundred eighty-nine million, five hundred eighty-four thousand, seven hundred forty-nine".