489428985 has 8 divisors (see below), whose sum is σ = 783086400. Its totient is φ = 261028784.

The previous prime is 489428971. The next prime is 489428987. The reversal of 489428985 is 589824984.

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 489428985 - 2⁹ = 489428473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489428987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16314285 + ... + 16314314.

It is an arithmetic number, because the mean of its divisors is an integer number (97885800).

Almost surely, 2^489428985 is an apocalyptic number.

It is an amenable number.

489428985 is a deficient number, since it is larger than the sum of its proper divisors (293657415).

489428985 is a wasteful number, since it uses less digits than its factorization.

489428985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32628607.

The product of its digits is 6635520, while the sum is 57.

The square root of 489428985 is about 22123.0419472549. The cubic root of 489428985 is about 788.0671570694.

The spelling of 489428985 in words is "four hundred eighty-nine million, four hundred twenty-eight thousand, nine hundred eighty-five".