489857550 has 192 divisors, whose sum is σ = 1583898624. Its totient is φ = 97228800.

The previous prime is 489857539. The next prime is 489857561. The reversal of 489857550 is 55758984.

It is an interprime number because it is at equal distance from previous prime (489857539) and next prime (489857561).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 489857493 and 489857502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 230995 + ... + 233105.

It is an arithmetic number, because the mean of its divisors is an integer number (8249472).

Almost surely, 2^489857550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489857550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791949312).

489857550 is an abundant number, since it is smaller than the sum of its proper divisors (1094041074).

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

489857550 is a wasteful number, since it uses less digits than its factorization.

489857550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 51.

The square root of 489857550 is about 22132.7257697736. The cubic root of 489857550 is about 788.2971117582.

The spelling of 489857550 in words is "four hundred eighty-nine million, eight hundred fifty-seven thousand, five hundred fifty".