990086 has 4 divisors (see below), whose sum is σ = 1485132. Its totient is φ = 495042.

The previous prime is 990053. The next prime is 990137. The reversal of 990086 is 680099.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 680099 = 7 ⋅97157.

It is a congruent number.

It is an unprimeable number.

990086 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 247520 + ... + 247523.

It is an arithmetic number, because the mean of its divisors is an integer number (371283).

2⁹⁹⁰⁰⁸⁶ is an apocalyptic number.

990086 is a deficient number, since it is larger than the sum of its proper divisors (495046).

990086 is a wasteful number, since it uses less digits than its factorization.

990086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495045.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 990086 is about 995.0306527942. The cubic root of 990086 is about 99.6684351962.

The spelling of 990086 in words is "nine hundred ninety thousand, eighty-six".