489940864 has 96 divisors (see below), whose sum is σ = 1154660400. Its totient is φ = 202844160.

The previous prime is 489940853. The next prime is 489940879. The reversal of 489940864 is 468049984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 860772 + ... + 861340.

Almost surely, 2^489940864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489940864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (577330200).

489940864 is an abundant number, since it is smaller than the sum of its proper divisors (664719536).

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

489940864 is an equidigital number, since it uses as much as digits as its factorization.

489940864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 52.

The square root of 489940864 is about 22134.6078347912. The cubic root of 489940864 is about 788.3417998943.

The spelling of 489940864 in words is "four hundred eighty-nine million, nine hundred forty thousand, eight hundred sixty-four".