11000091 has 16 divisors (see below), whose sum is σ = 15002624. Its totient is φ = 7167744.

The previous prime is 11000089. The next prime is 11000111. The reversal of 11000091 is 19000011.

It is not a de Polignac number, because 11000091 - 2¹ = 11000089 is a prime.

It is a Duffinian number.

11000091 is a modest number, since divided by 91 gives 11 as remainder.

It is not an unprimeable number, because it can be changed into a prime (11000081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29790 + ... + 30156.

It is an arithmetic number, because the mean of its divisors is an integer number (937664).

Almost surely, 2^11000091 is an apocalyptic number.

11000091 is a deficient number, since it is larger than the sum of its proper divisors (4002533).

11000091 is a wasteful number, since it uses less digits than its factorization.

11000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 11000091 is about 3316.6385090932. The cubic root of 11000091 is about 222.3986223346.

The spelling of 11000091 in words is "eleven million, ninety-one", and thus it is an aban number and an uban number.