108987904 has 20 divisors (see below), whose sum is σ = 217763964. Its totient is φ = 54493696.

The previous prime is 108987899. The next prime is 108987917. The reversal of 108987904 is 409789801.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 105922 + ... + 106945.

Almost surely, 2^108987904 is an apocalyptic number.

It is an amenable number.

108987904 is a deficient number, since it is larger than the sum of its proper divisors (108776060).

108987904 is an frugal number, since it uses more digits than its factorization.

108987904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212885 (or 212869 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 108987904 is about 10439.7271995010. The cubic root of 108987904 is about 477.6679474644.

The spelling of 108987904 in words is "one hundred eight million, nine hundred eighty-seven thousand, nine hundred four".