489309890 has 32 divisors (see below), whose sum is σ = 916185600. Its totient is φ = 187948800.

The previous prime is 489309883. The next prime is 489309893. The reversal of 489309890 is 98903984.

It is not an unprimeable number, because it can be changed into a prime (489309893) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 34586 + ... + 46634.

It is an arithmetic number, because the mean of its divisors is an integer number (28630800).

Almost surely, 2^489309890 is an apocalyptic number.

489309890 is a deficient number, since it is larger than the sum of its proper divisors (426875710).

489309890 is a wasteful number, since it uses less digits than its factorization.

489309890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12218.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 489309890 is about 22120.3501328528. The cubic root of 489309890 is about 788.0032305518.

The spelling of 489309890 in words is "four hundred eighty-nine million, three hundred nine thousand, eight hundred ninety".