889987688 has 16 divisors (see below), whose sum is σ = 1677200580. Its totient is φ = 442734208.

The previous prime is 889987663. The next prime is 889987717. The reversal of 889987688 is 886789988.

It can be written as a sum of positive squares in 2 ways, for example, as 805310884 + 84676804 = 28378^2 + 9202^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 280781 + ... + 283932.

Almost surely, 2^889987688 is an apocalyptic number.

It is an amenable number.

889987688 is a deficient number, since it is larger than the sum of its proper divisors (787212892).

889987688 is a wasteful number, since it uses less digits than its factorization.

889987688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564916 (or 564912 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 71.

The square root of 889987688 is about 29832.6614300501. The cubic root of 889987688 is about 961.8957360386.

The spelling of 889987688 in words is "eight hundred eighty-nine million, nine hundred eighty-seven thousand, six hundred eighty-eight".