990108 has 36 divisors (see below), whose sum is σ = 2861040. Its totient is φ = 282816.

The previous prime is 990053. The next prime is 990137. The reversal of 990108 is 801099.

990108 is nontrivially palindromic in base 13.

It is a tau number, because it is divible by the number of its divisors (36).

It is a zygodrome in base 6.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 990108.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1713 + ... + 2216.

2⁹⁹⁰¹⁰⁸ is an apocalyptic number.

It is an amenable number.

990108 is an abundant number, since it is smaller than the sum of its proper divisors (1870932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990108 is a wasteful number, since it uses less digits than its factorization.

990108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 990108 is about 995.0417076686. The cubic root of 990108 is about 99.6691734113.

The spelling of 990108 in words is "nine hundred ninety thousand, one hundred eight".