489976669728 has 1152 divisors, whose sum is σ = 1879845408000. Its totient is φ = 124439390208.

The previous prime is 489976669717. The next prime is 489976669747. The reversal of 489976669728 is 827966679984.

It is a Harshad number since it is a multiple of its sum of digits (81).

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1292814243 + ... + 1292814621.

It is an arithmetic number, because the mean of its divisors is an integer number (1631810250).

Almost surely, 2^489976669728 is an apocalyptic number.

489976669728 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 489976669728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939922704000).

489976669728 is an abundant number, since it is smaller than the sum of its proper divisors (1389868738272).

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

489976669728 is a wasteful number, since it uses less digits than its factorization.

489976669728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 433 counting only the distinct ones).

The product of its digits is 3950456832, while the sum is 81.

The spelling of 489976669728 in words is "four hundred eighty-nine billion, nine hundred seventy-six million, six hundred sixty-nine thousand, seven hundred twenty-eight".