489481664 has 28 divisors (see below), whose sum is σ = 1110075504. Its totient is φ = 209777664.

The previous prime is 489481651. The next prime is 489481679. The reversal of 489481664 is 466184984.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545849 + ... + 546744.

Almost surely, 2^489481664 is an apocalyptic number.

It is an amenable number.

489481664 is an abundant number, since it is smaller than the sum of its proper divisors (620593840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489481664 is a wasteful number, since it uses less digits than its factorization.

489481664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092612 (or 1092602 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 50.

The square root of 489481664 is about 22124.2325064622. The cubic root of 489481664 is about 788.0954302215.

The spelling of 489481664 in words is "four hundred eighty-nine million, four hundred eighty-one thousand, six hundred sixty-four".