11099813 has 4 divisors (see below), whose sum is σ = 11224620. Its totient is φ = 10975008.

The previous prime is 11099791. The next prime is 11099821. The reversal of 11099813 is 31899011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31899011 = 2753 ⋅11587.

It can be written as a sum of positive squares in 2 ways, for example, as 6360484 + 4739329 = 2522^2 + 2177^2 .

It is a cyclic number.

It is not a de Polignac number, because 11099813 - 2¹⁶ = 11034277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11099813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11099833) 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 3 ways as a sum of consecutive naturals, for example, 62270 + ... + 62447.

It is an arithmetic number, because the mean of its divisors is an integer number (2806155).

Almost surely, 2^11099813 is an apocalyptic number.

It is an amenable number.

11099813 is a deficient number, since it is larger than the sum of its proper divisors (124807).

11099813 is an equidigital number, since it uses as much as digits as its factorization.

11099813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124806.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 11099813 is about 3331.6381856378. The cubic root of 11099813 is about 223.0686577657.

The spelling of 11099813 in words is "eleven million, ninety-nine thousand, eight hundred thirteen".