489403788 has 12 divisors (see below), whose sum is σ = 1141942200. Its totient is φ = 163134592.

The previous prime is 489403763. The next prime is 489403801. The reversal of 489403788 is 887304984.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 489403788.

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, 20391813 + ... + 20391836.

It is an arithmetic number, because the mean of its divisors is an integer number (95161850).

Almost surely, 2^489403788 is an apocalyptic number.

It is an amenable number.

489403788 is an abundant number, since it is smaller than the sum of its proper divisors (652538412).

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

489403788 is a wasteful number, since it uses less digits than its factorization.

489403788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40783656 (or 40783654 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 489403788 is about 22122.4724657982. The cubic root of 489403788 is about 788.0536329630.

The spelling of 489403788 in words is "four hundred eighty-nine million, four hundred three thousand, seven hundred eighty-eight".