990835 has 8 divisors (see below), whose sum is σ = 1211760. Its totient is φ = 777504.

The previous prime is 990809. The next prime is 990841. The reversal of 990835 is 538099.

990835 is nontrivially palindromic in base 8.

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

It is a cyclic number.

It is not a de Polignac number, because 990835 - 2⁷ = 990707 is a prime.

It is a plaindrome in base 15.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 990835.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1605 + ... + 2134.

It is an arithmetic number, because the mean of its divisors is an integer number (151470).

2⁹⁹⁰⁸³⁵ is an apocalyptic number.

990835 is a deficient number, since it is larger than the sum of its proper divisors (220925).

990835 is a wasteful number, since it uses less digits than its factorization.

990835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 990835 is about 995.4069519548. The cubic root of 990835 is about 99.6935619162.

The spelling of 990835 in words is "nine hundred ninety thousand, eight hundred thirty-five".