489758789 has 6 divisors (see below), whose sum is σ = 530330706. Its totient is φ = 452084880.

The previous prime is 489758783. The next prime is 489758791. The reversal of 489758789 is 987857984.

It can be written as a sum of positive squares in 3 ways, for example, as 5098564 + 484660225 = 2258^2 + 22015^2 .

It is a de Polignac number, because none of the positive numbers 2^k-489758789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489758783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1448822 + ... + 1449159.

It is an arithmetic number, because the mean of its divisors is an integer number (88388451).

Almost surely, 2^489758789 is an apocalyptic number.

It is an amenable number.

489758789 is a deficient number, since it is larger than the sum of its proper divisors (40571917).

489758789 is a wasteful number, since it uses less digits than its factorization.

489758789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898007 (or 2897994 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 65.

The square root of 489758789 is about 22130.4945493769. The cubic root of 489758789 is about 788.2441315645.

The spelling of 489758789 in words is "four hundred eighty-nine million, seven hundred fifty-eight thousand, seven hundred eighty-nine".