11099391 has 4 divisors (see below), whose sum is σ = 14799192. Its totient is φ = 7399592.

The previous prime is 11099381. The next prime is 11099393. The reversal of 11099391 is 19399011.

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 11099391 - 2⁶ = 11099327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11099393) 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, 1849896 + ... + 1849901.

It is an arithmetic number, because the mean of its divisors is an integer number (3699798).

Almost surely, 2^11099391 is an apocalyptic number.

11099391 is a deficient number, since it is larger than the sum of its proper divisors (3699801).

11099391 is an equidigital number, since it uses as much as digits as its factorization.

11099391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699800.

The product of its (nonzero) digits is 2187, while the sum is 33.

The square root of 11099391 is about 3331.5748528286. The cubic root of 11099391 is about 223.0658308061.

The spelling of 11099391 in words is "eleven million, ninety-nine thousand, three hundred ninety-one".