990199216 has 20 divisors (see below), whose sum is σ = 1919160400. Its totient is φ = 494932032.

The previous prime is 990199211. The next prime is 990199219. The reversal of 990199216 is 612991099.

990199216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (990199211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48250 + ... + 65638.

It is an arithmetic number, because the mean of its divisors is an integer number (95958020).

Almost surely, 2^990199216 is an apocalyptic number.

It is an amenable number.

990199216 is a deficient number, since it is larger than the sum of its proper divisors (928961184).

990199216 is a wasteful number, since it uses less digits than its factorization.

990199216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20956 (or 20950 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 46.

The square root of 990199216 is about 31467.4310359139. The cubic root of 990199216 is about 996.7223406868.

The spelling of 990199216 in words is "nine hundred ninety million, one hundred ninety-nine thousand, two hundred sixteen".