11097609 has 4 divisors (see below), whose sum is σ = 14796816. Its totient is φ = 7398404.

The previous prime is 11097599. The next prime is 11097613. The reversal of 11097609 is 90679011.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11097609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11097609.

It is not an unprimeable number, because it can be changed into a prime (11097629) 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, 1849599 + ... + 1849604.

It is an arithmetic number, because the mean of its divisors is an integer number (3699204).

Almost surely, 2^11097609 is an apocalyptic number.

It is an amenable number.

11097609 is a deficient number, since it is larger than the sum of its proper divisors (3699207).

11097609 is an equidigital number, since it uses as much as digits as its factorization.

11097609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699206.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 11097609 is about 3331.3074010064. The cubic root of 11097609 is about 223.0538924759.

The spelling of 11097609 in words is "eleven million, ninety-seven thousand, six hundred nine".