1109023 has 4 divisors (see below), whose sum is σ = 1127880. Its totient is φ = 1090168.

The previous prime is 1109021. The next prime is 1109033. The reversal of 1109023 is 3209011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1109023 - 2¹ = 1109021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1108988 and 1109006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9340 + ... + 9457.

It is an arithmetic number, because the mean of its divisors is an integer number (281970).

2^1109023 is an apocalyptic number.

1109023 is a deficient number, since it is larger than the sum of its proper divisors (18857).

1109023 is an equidigital number, since it uses as much as digits as its factorization.

1109023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18856.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1109023 is about 1053.1016095325. The cubic root of 1109023 is about 103.5094937109.

The spelling of 1109023 in words is "one million, one hundred nine thousand, twenty-three".