11001091 has 8 divisors (see below), whose sum is σ = 11677824. Its totient is φ = 10327680.

The previous prime is 11001083. The next prime is 11001103. The reversal of 11001091 is 19010011.

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 11001091 - 2³ = 11001083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10606 + ... + 11596.

It is an arithmetic number, because the mean of its divisors is an integer number (1459728).

Almost surely, 2^11001091 is an apocalyptic number.

11001091 is a deficient number, since it is larger than the sum of its proper divisors (676733).

11001091 is an equidigital number, since it uses as much as digits as its factorization.

11001091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 11001091 is about 3316.7892607159. The cubic root of 11001091 is about 222.4053614268.

The spelling of 11001091 in words is "eleven million, one thousand, ninety-one".