990199011 has 8 divisors (see below), whose sum is σ = 1321900560. Its totient is φ = 659315072.

The previous prime is 990199009. The next prime is 990199037. The reversal of 990199011 is 110991099.

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 990199011 - 2¹ = 990199009 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 201570 + ... + 206423.

It is an arithmetic number, because the mean of its divisors is an integer number (165237570).

Almost surely, 2^990199011 is an apocalyptic number.

990199011 is a deficient number, since it is larger than the sum of its proper divisors (331701549).

990199011 is a wasteful number, since it uses less digits than its factorization.

990199011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408805.

The product of its (nonzero) digits is 6561, while the sum is 39.

The square root of 990199011 is about 31467.4277785776. The cubic root of 990199011 is about 996.7222719033.

The spelling of 990199011 in words is "nine hundred ninety million, one hundred ninety-nine thousand, eleven".