489079809 has 32 divisors (see below), whose sum is σ = 753177600. Its totient is φ = 313286400.

The previous prime is 489079763. The next prime is 489079819. The reversal of 489079809 is 908970984.

It is not a de Polignac number, because 489079809 - 2⁸ = 489079553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (489079819) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 173209 + ... + 176009.

It is an arithmetic number, because the mean of its divisors is an integer number (23536800).

Almost surely, 2^489079809 is an apocalyptic number.

It is an amenable number.

489079809 is a deficient number, since it is larger than the sum of its proper divisors (264097791).

489079809 is a wasteful number, since it uses less digits than its factorization.

489079809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062 (or 3056 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 489079809 is about 22115.1488577400. The cubic root of 489079809 is about 787.8797007944.

The spelling of 489079809 in words is "four hundred eighty-nine million, seventy-nine thousand, eight hundred nine".