8991011 has 4 divisors (see below), whose sum is σ = 9519912. Its totient is φ = 8462112.

The previous prime is 8991007. The next prime is 8991029. The reversal of 8991011 is 1101998.

8991011 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8991011 - 2² = 8991007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8991001) 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, 264425 + ... + 264458.

It is an arithmetic number, because the mean of its divisors is an integer number (2379978).

Almost surely, 2^8991011 is an apocalyptic number.

8991011 is a deficient number, since it is larger than the sum of its proper divisors (528901).

8991011 is a wasteful number, since it uses less digits than its factorization.

8991011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528900.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 8991011 is about 2998.5014590625. The cubic root of 8991011 is about 207.9391078535.

The spelling of 8991011 in words is "eight million, nine hundred ninety-one thousand, eleven".