990886 has 16 divisors (see below), whose sum is σ = 1671264. Its totient is φ = 437184.

The previous prime is 990881. The next prime is 990887. The reversal of 990886 is 688099.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (104454).

2⁹⁹⁰⁸⁸⁶ is an apocalyptic number.

990886 is a deficient number, since it is larger than the sum of its proper divisors (680378).

990886 is a wasteful number, since it uses less digits than its factorization.

990886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 990886 is about 995.4325692883. The cubic root of 990886 is about 99.6952723538.

The spelling of 990886 in words is "nine hundred ninety thousand, eight hundred eighty-six".