489911616 has 168 divisors, whose sum is σ = 1470050400. Its totient is φ = 155796480.

The previous prime is 489911579. The next prime is 489911623. The reversal of 489911616 is 616119984.

489911616 is a `hidden beast` number, since 489 + 9 + 1 + 161 + 6 = 666.

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

Its product of digits (93312) is a multiple of the sum of its prime divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2321751 + ... + 2321961.

It is an arithmetic number, because the mean of its divisors is an integer number (8750300).

Almost surely, 2^489911616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489911616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735025200).

489911616 is an abundant number, since it is smaller than the sum of its proper divisors (980138784).

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

489911616 is a wasteful number, since it uses less digits than its factorization.

489911616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 384 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 489911616 is about 22133.9471400833. The cubic root of 489911616 is about 788.3261123685.

The spelling of 489911616 in words is "four hundred eighty-nine million, nine hundred eleven thousand, six hundred sixteen".