489621888 has 256 divisors, whose sum is σ = 1699238400. Its totient is φ = 135862272.

The previous prime is 489621883. The next prime is 489621911. The reversal of 489621888 is 888126984.

489621888 is a `hidden beast` number, since 4 + 8 + 9 + 621 + 8 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489621883) 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, 894831 + ... + 895377.

It is an arithmetic number, because the mean of its divisors is an integer number (6637650).

Almost surely, 2^489621888 is an apocalyptic number.

489621888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489621888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849619200).

489621888 is an abundant number, since it is smaller than the sum of its proper divisors (1209616512).

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

489621888 is a wasteful number, since it uses less digits than its factorization.

489621888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 596 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 54.

The square root of 489621888 is about 22127.4012934190. The cubic root of 489621888 is about 788.1706794430.

The spelling of 489621888 in words is "four hundred eighty-nine million, six hundred twenty-one thousand, eight hundred eighty-eight".