990109011 has 8 divisors (see below), whose sum is σ = 1355825104. Its totient is φ = 642232800.

The previous prime is 990109009. The next prime is 990109067. The reversal of 990109011 is 110901099.

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

It is not a de Polignac number, because 990109011 - 2¹ = 990109009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 990109011.

It is not an unprimeable number, because it can be changed into a prime (990109511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4459840 + ... + 4460061.

It is an arithmetic number, because the mean of its divisors is an integer number (169478138).

Almost surely, 2^990109011 is an apocalyptic number.

990109011 is a deficient number, since it is larger than the sum of its proper divisors (365716093).

990109011 is a wasteful number, since it uses less digits than its factorization.

990109011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8919941.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 990109011 is about 31465.9976959257. The cubic root of 990109011 is about 996.6920733535.

The spelling of 990109011 in words is "nine hundred ninety million, one hundred nine thousand, eleven".