990042216 has 64 divisors (see below), whose sum is σ = 2548039680. Its totient is φ = 320402880.

The previous prime is 990042203. The next prime is 990042227. The reversal of 990042216 is 612240099.

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 15 ways as a sum of consecutive naturals, for example, 139801 + ... + 146711.

It is an arithmetic number, because the mean of its divisors is an integer number (39813120).

Almost surely, 2^990042216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990042216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274019840).

990042216 is an abundant number, since it is smaller than the sum of its proper divisors (1557997464).

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

990042216 is a wasteful number, since it uses less digits than its factorization.

990042216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094 (or 7090 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 990042216 is about 31464.9362942308. The cubic root of 990042216 is about 996.6696598134.

The spelling of 990042216 in words is "nine hundred ninety million, forty-two thousand, two hundred sixteen".