1109039 has 4 divisors (see below), whose sum is σ = 1112280. Its totient is φ = 1105800.

The previous prime is 1109033. The next prime is 1109057. The reversal of 1109039 is 9309011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9309011 = 181 ⋅51431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109033) 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, 1037 + ... + 1814.

It is an arithmetic number, because the mean of its divisors is an integer number (278070).

2^1109039 is an apocalyptic number.

1109039 is a deficient number, since it is larger than the sum of its proper divisors (3241).

1109039 is an equidigital number, since it uses as much as digits as its factorization.

1109039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 1109039 is about 1053.1092061130. The cubic root of 1109039 is about 103.5099914896.

The spelling of 1109039 in words is "one million, one hundred nine thousand, thirty-nine".