489517816 has 16 divisors (see below), whose sum is σ = 919063440. Its totient is φ = 244434240.

The previous prime is 489517799. The next prime is 489517823. The reversal of 489517816 is 618715984.

It is a self number, because there is not a number n which added to its sum of digits gives 489517816.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 34116 + ... + 46291.

It is an arithmetic number, because the mean of its divisors is an integer number (57441465).

Almost surely, 2^489517816 is an apocalyptic number.

It is an amenable number.

489517816 is a deficient number, since it is larger than the sum of its proper divisors (429545624).

489517816 is a wasteful number, since it uses less digits than its factorization.

489517816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81174 (or 81170 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The square root of 489517816 is about 22125.0495140689. The cubic root of 489517816 is about 788.1148320545.

The spelling of 489517816 in words is "four hundred eighty-nine million, five hundred seventeen thousand, eight hundred sixteen".