489479715858 has 64 divisors (see below), whose sum is σ = 1145179487232. Its totient is φ = 136557247680.

The previous prime is 489479715847. The next prime is 489479715859. The reversal of 489479715858 is 858517974984.

It is a self number, because there is not a number n which added to its sum of digits gives 489479715858.

It is not an unprimeable number, because it can be changed into a prime (489479715859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6124173 + ... + 6203583.

It is an arithmetic number, because the mean of its divisors is an integer number (17893429488).

Almost surely, 2^489479715858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489479715858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572589743616).

489479715858 is an abundant number, since it is smaller than the sum of its proper divisors (655699771374).

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

489479715858 is a wasteful number, since it uses less digits than its factorization.

489479715858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82879.

The product of its digits is 812851200, while the sum is 75.

The spelling of 489479715858 in words is "four hundred eighty-nine billion, four hundred seventy-nine million, seven hundred fifteen thousand, eight hundred fifty-eight".