11091797 has 4 divisors (see below), whose sum is σ = 11141760. Its totient is φ = 11041836.

The previous prime is 11091793. The next prime is 11091811. The reversal of 11091797 is 79719011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79719011 = 31 ⋅2571581.

It is a cyclic number.

It is not a de Polignac number, because 11091797 - 2² = 11091793 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 (11091791) 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, 24647 + ... + 25092.

It is an arithmetic number, because the mean of its divisors is an integer number (2785440).

Almost surely, 2^11091797 is an apocalyptic number.

It is an amenable number.

11091797 is a deficient number, since it is larger than the sum of its proper divisors (49963).

11091797 is an equidigital number, since it uses as much as digits as its factorization.

11091797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49962.

The product of its (nonzero) digits is 3969, while the sum is 35.

The square root of 11091797 is about 3330.4349565785. The cubic root of 11091797 is about 223.0149466813.

The spelling of 11091797 in words is "eleven million, ninety-one thousand, seven hundred ninety-seven".