11091197 has 8 divisors (see below), whose sum is σ = 12236280. Its totient is φ = 9987840.

The previous prime is 11091187. The next prime is 11091229. The reversal of 11091197 is 79119011.

It can be written as a sum of positive squares in 4 ways, for example, as 502681 + 10588516 = 709^2 + 3254^2 .

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 11091197 - 2⁴ = 11091181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11091127) 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, 9872 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (1529535).

Almost surely, 2^11091197 is an apocalyptic number.

It is an amenable number.

11091197 is a deficient number, since it is larger than the sum of its proper divisors (1145083).

11091197 is a wasteful number, since it uses less digits than its factorization.

11091197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20863.

The product of its (nonzero) digits is 567, while the sum is 29.

The square root of 11091197 is about 3330.3448770360. The cubic root of 11091197 is about 223.0109253497.

The spelling of 11091197 in words is "eleven million, ninety-one thousand, one hundred ninety-seven".