489785644 has 12 divisors (see below), whose sum is σ = 894391344. Its totient is φ = 234245264.

The previous prime is 489785641. The next prime is 489785671. The reversal of 489785644 is 446587984.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (489785641) 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 3 ways as a sum of consecutive naturals, for example, 2661787 + ... + 2661970.

It is an arithmetic number, because the mean of its divisors is an integer number (74532612).

Almost surely, 2^489785644 is an apocalyptic number.

It is an amenable number.

489785644 is a deficient number, since it is larger than the sum of its proper divisors (404605700).

489785644 is a wasteful number, since it uses less digits than its factorization.

489785644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5323784 (or 5323782 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 55.

The square root of 489785644 is about 22131.1012830361. The cubic root of 489785644 is about 788.2585385949.

The spelling of 489785644 in words is "four hundred eighty-nine million, seven hundred eighty-five thousand, six hundred forty-four".