990846 has 32 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 323640.

The previous prime is 990841. The next prime is 990851. The reversal of 990846 is 648099.

It is an interprime number because it is at equal distance from previous prime (990841) and next prime (990851).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 990846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990841) by changing a digit.

990846 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3031 + ... + 3341.

It is an arithmetic number, because the mean of its divisors is an integer number (70200).

2⁹⁹⁰⁸⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1123200).

990846 is an abundant number, since it is smaller than the sum of its proper divisors (1255554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990846 is a wasteful number, since it uses less digits than its factorization.

990846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 990846 is about 995.4124773178. The cubic root of 990846 is about 99.6939308391.

The spelling of 990846 in words is "nine hundred ninety thousand, eight hundred forty-six".