489904887 has 4 divisors (see below), whose sum is σ = 653206520. Its totient is φ = 326603256.

The previous prime is 489904879. The next prime is 489904897. The reversal of 489904887 is 788409984.

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

It is not a de Polignac number, because 489904887 - 2³ = 489904879 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 (489904897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81650812 + ... + 81650817.

It is an arithmetic number, because the mean of its divisors is an integer number (163301630).

Almost surely, 2^489904887 is an apocalyptic number.

489904887 is a deficient number, since it is larger than the sum of its proper divisors (163301633).

489904887 is a wasteful number, since it uses less digits than its factorization.

489904887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163301632.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The square root of 489904887 is about 22133.7951332346. The cubic root of 489904887 is about 788.3225030979.

The spelling of 489904887 in words is "four hundred eighty-nine million, nine hundred four thousand, eight hundred eighty-seven".