11090391 has 8 divisors (see below), whose sum is σ = 15924720. Its totient is φ = 6824832.

The previous prime is 11090389. The next prime is 11090399. The reversal of 11090391 is 19309011.

11090391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11090391 - 2¹ = 11090389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11090399) 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, 142146 + ... + 142223.

It is an arithmetic number, because the mean of its divisors is an integer number (1990590).

Almost surely, 2^11090391 is an apocalyptic number.

11090391 is a deficient number, since it is larger than the sum of its proper divisors (4834329).

11090391 is a wasteful number, since it uses less digits than its factorization.

11090391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284385.

The product of its (nonzero) digits is 243, while the sum is 24.

The square root of 11090391 is about 3330.2238663489. The cubic root of 11090391 is about 223.0055231327.

The spelling of 11090391 in words is "eleven million, ninety thousand, three hundred ninety-one".