1100109 has 4 divisors (see below), whose sum is σ = 1466816. Its totient is φ = 733404.

The previous prime is 1100101. The next prime is 1100123. The reversal of 1100109 is 9010011.

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: 9010011 = 3 ⋅3003337.

It is not a de Polignac number, because 1100109 - 2³ = 1100101 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100094 and 1100103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100101) 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, 183349 + ... + 183354.

It is an arithmetic number, because the mean of its divisors is an integer number (366704).

2^1100109 is an apocalyptic number.

It is an amenable number.

1100109 is a deficient number, since it is larger than the sum of its proper divisors (366707).

1100109 is an equidigital number, since it uses as much as digits as its factorization.

1100109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366706.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1100109 is about 1048.8608105940. The cubic root of 1100109 is about 103.2314210855.

The spelling of 1100109 in words is "one million, one hundred thousand, one hundred nine".