990286 has 8 divisors (see below), whose sum is σ = 1620504. Its totient is φ = 450120.

The previous prime is 990281. The next prime is 990287. The reversal of 990286 is 682099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990281) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 22485 + ... + 22528.

It is an arithmetic number, because the mean of its divisors is an integer number (202563).

2⁹⁹⁰²⁸⁶ is an apocalyptic number.

990286 is a deficient number, since it is larger than the sum of its proper divisors (630218).

990286 is a wasteful number, since it uses less digits than its factorization.

990286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45026.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 990286 is about 995.1311471359. The cubic root of 990286 is about 99.6751458405.

The spelling of 990286 in words is "nine hundred ninety thousand, two hundred eighty-six".