489890320 has 20 divisors (see below), whose sum is σ = 1138995180. Its totient is φ = 195956096.

The previous prime is 489890287. The next prime is 489890333. The reversal of 489890320 is 23098984.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 283450896 + 206439424 = 16836^2 + 14368^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3061735 + ... + 3061894.

It is an arithmetic number, because the mean of its divisors is an integer number (56949759).

Almost surely, 2^489890320 is an apocalyptic number.

489890320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

489890320 is an abundant number, since it is smaller than the sum of its proper divisors (649104860).

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

489890320 is a wasteful number, since it uses less digits than its factorization.

489890320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6123642 (or 6123636 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 489890320 is about 22133.4660638590. The cubic root of 489890320 is about 788.3146896032.

The spelling of 489890320 in words is "four hundred eighty-nine million, eight hundred ninety thousand, three hundred twenty".