489865989 has 8 divisors (see below), whose sum is σ = 662102272. Its totient is φ = 322103520.

The previous prime is 489865973. The next prime is 489865993. The reversal of 489865989 is 989568984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 489865989 - 2⁴ = 489865973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489865939) 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 7 ways as a sum of consecutive naturals, for example, 1118197 + ... + 1118634.

It is an arithmetic number, because the mean of its divisors is an integer number (82762784).

Almost surely, 2^489865989 is an apocalyptic number.

It is an amenable number.

489865989 is a deficient number, since it is larger than the sum of its proper divisors (172236283).

489865989 is a wasteful number, since it uses less digits than its factorization.

489865989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236907.

The product of its digits is 44789760, while the sum is 66.

The square root of 489865989 is about 22132.9164142460. The cubic root of 489865989 is about 788.3016385171.

The spelling of 489865989 in words is "four hundred eighty-nine million, eight hundred sixty-five thousand, nine hundred eighty-nine".