489747988 has 12 divisors (see below), whose sum is σ = 865069632. Its totient is φ = 242585240.

The previous prime is 489747919. The next prime is 489747991. The reversal of 489747988 is 889747984.

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, 571708 + ... + 572563.

It is an arithmetic number, because the mean of its divisors is an integer number (72089136).

Almost surely, 2^489747988 is an apocalyptic number.

It is an amenable number.

489747988 is a deficient number, since it is larger than the sum of its proper divisors (375321644).

489747988 is a wasteful number, since it uses less digits than its factorization.

489747988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144382 (or 1144380 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 64.

The square root of 489747988 is about 22130.2505182386. The cubic root of 489747988 is about 788.2383369518.

The spelling of 489747988 in words is "four hundred eighty-nine million, seven hundred forty-seven thousand, nine hundred eighty-eight".