11098609 has 4 divisors (see below), whose sum is σ = 11109616. Its totient is φ = 11087604.

The previous prime is 11098579. The next prime is 11098621. The reversal of 11098609 is 90689011.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11098609 - 2⁷ = 11098481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11098639) 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, 3819 + ... + 6064.

It is an arithmetic number, because the mean of its divisors is an integer number (2777404).

Almost surely, 2^11098609 is an apocalyptic number.

It is an amenable number.

11098609 is a deficient number, since it is larger than the sum of its proper divisors (11007).

11098609 is an equidigital number, since it uses as much as digits as its factorization.

11098609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11006.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 11098609 is about 3331.4574888478. The cubic root of 11098609 is about 223.0605920329.

The spelling of 11098609 in words is "eleven million, ninety-eight thousand, six hundred nine".