489389868 has 36 divisors (see below), whose sum is σ = 1349530728. Its totient is φ = 148299840.

The previous prime is 489389867. The next prime is 489389891. The reversal of 489389868 is 868983984.

489389868 is a `hidden beast` number, since 489 + 3 + 8 + 98 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (489389867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617521 + ... + 618312.

Almost surely, 2^489389868 is an apocalyptic number.

It is an amenable number.

489389868 is an abundant number, since it is smaller than the sum of its proper divisors (860140860).

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

489389868 is a wasteful number, since it uses less digits than its factorization.

489389868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235854 (or 1235849 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 63.

The square root of 489389868 is about 22122.1578513490. The cubic root of 489389868 is about 788.0461614158.

The spelling of 489389868 in words is "four hundred eighty-nine million, three hundred eighty-nine thousand, eight hundred sixty-eight".