489974550 has 96 divisors (see below), whose sum is σ = 1327415040. Its totient is φ = 118876800.

The previous prime is 489974539. The next prime is 489974557. The reversal of 489974550 is 55479984.

It is a junction number, because it is equal to n+sod(n) for n = 489974493 and 489974502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489974557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136681 + ... + 140219.

It is an arithmetic number, because the mean of its divisors is an integer number (13827240).

Almost surely, 2^489974550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489974550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663707520).

489974550 is an abundant number, since it is smaller than the sum of its proper divisors (837440490).

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

489974550 is a wasteful number, since it uses less digits than its factorization.

489974550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638 (or 3633 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 489974550 is about 22135.3687568109. The cubic root of 489974550 is about 788.3598670225.

The spelling of 489974550 in words is "four hundred eighty-nine million, nine hundred seventy-four thousand, five hundred fifty".