489654689 has 4 divisors (see below), whose sum is σ = 518457924. Its totient is φ = 460851456.

The previous prime is 489654661. The next prime is 489654691. The reversal of 489654689 is 986456984.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218064289 + 271590400 = 14767^2 + 16480^2 .

It is a cyclic number.

It is not a de Polignac number, because 489654689 - 2²⁴ = 472877473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489654619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14401592 + ... + 14401625.

It is an arithmetic number, because the mean of its divisors is an integer number (129614481).

Almost surely, 2^489654689 is an apocalyptic number.

It is an amenable number.

489654689 is a deficient number, since it is larger than the sum of its proper divisors (28803235).

489654689 is a wasteful number, since it uses less digits than its factorization.

489654689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28803234.

The product of its digits is 14929920, while the sum is 59.

The square root of 489654689 is about 22128.1424660996. The cubic root of 489654689 is about 788.1882795611.

The spelling of 489654689 in words is "four hundred eighty-nine million, six hundred fifty-four thousand, six hundred eighty-nine".