1111109 has 4 divisors (see below), whose sum is σ = 1114080. Its totient is φ = 1108140.

The previous prime is 1111091. The next prime is 1111151. The reversal of 1111109 is 9011111.

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.

It is a cyclic number.

It is not a de Polignac number, because 1111109 - 2¹⁶ = 1045573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1111093 and 1111102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111169) 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, 827 + ... + 1704.

It is an arithmetic number, because the mean of its divisors is an integer number (278520).

2^1111109 is an apocalyptic number.

It is an amenable number.

1111109 is a deficient number, since it is larger than the sum of its proper divisors (2971).

1111109 is an equidigital number, since it uses as much as digits as its factorization.

1111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970.

The product of its (nonzero) digits is 9, while the sum is 14.

The square root of 1111109 is about 1054.0915520011. The cubic root of 1111109 is about 103.5743512680.

The spelling of 1111109 in words is "one million, one hundred eleven thousand, one hundred nine".