489642865 has 8 divisors (see below), whose sum is σ = 590855040. Its totient is φ = 389525232.

The previous prime is 489642821. The next prime is 489642871. The reversal of 489642865 is 568246984.

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

It is a cyclic number.

It is not a de Polignac number, because 489642865 - 2²⁵ = 456088433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272649 + ... + 274438.

It is an arithmetic number, because the mean of its divisors is an integer number (73856880).

Almost surely, 2^489642865 is an apocalyptic number.

It is an amenable number.

489642865 is a deficient number, since it is larger than the sum of its proper divisors (101212175).

489642865 is a wasteful number, since it uses less digits than its factorization.

489642865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547271.

The product of its digits is 3317760, while the sum is 52.

The square root of 489642865 is about 22127.8752933941. The cubic root of 489642865 is about 788.1819352172.

The spelling of 489642865 in words is "four hundred eighty-nine million, six hundred forty-two thousand, eight hundred sixty-five".