108643984 has 20 divisors (see below), whose sum is σ = 213641584. Its totient is φ = 53510688.

The previous prime is 108643979. The next prime is 108643999. The reversal of 108643984 is 489346801.

It is a self number, because there is not a number n which added to its sum of digits gives 108643984.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49602 + ... + 51745.

Almost surely, 2^108643984 is an apocalyptic number.

It is an amenable number.

108643984 is a deficient number, since it is larger than the sum of its proper divisors (104997600).

108643984 is a wasteful number, since it uses less digits than its factorization.

108643984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101422 (or 101416 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 108643984 is about 10423.2424897438. The cubic root of 108643984 is about 477.1649783057.

The spelling of 108643984 in words is "one hundred eight million, six hundred forty-three thousand, nine hundred eighty-four".