990118 has 16 divisors (see below), whose sum is σ = 1576080. Its totient is φ = 465696.

The previous prime is 990053. The next prime is 990137. The reversal of 990118 is 811099.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296 + ... + 2692.

It is an arithmetic number, because the mean of its divisors is an integer number (98505).

2⁹⁹⁰¹¹⁸ is an apocalyptic number.

990118 is a deficient number, since it is larger than the sum of its proper divisors (585962).

990118 is a wasteful number, since it uses less digits than its factorization.

990118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 990118 is about 995.0467325709. The cubic root of 990118 is about 99.6695089600.

The spelling of 990118 in words is "nine hundred ninety thousand, one hundred eighteen".