1109705 has 4 divisors (see below), whose sum is σ = 1331652. Its totient is φ = 887760.

The previous prime is 1109663. The next prime is 1109723. The reversal of 1109705 is 5079011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 868624 + 241081 = 932^2 + 491^2 .

It is not a de Polignac number, because 1109705 - 2¹² = 1105609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 110966 + ... + 110975.

It is an arithmetic number, because the mean of its divisors is an integer number (332913).

2^1109705 is an apocalyptic number.

It is an amenable number.

1109705 is a deficient number, since it is larger than the sum of its proper divisors (221947).

1109705 is an equidigital number, since it uses as much as digits as its factorization.

1109705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221946.

The product of its (nonzero) digits is 315, while the sum is 23.

The square root of 1109705 is about 1053.4253651778. The cubic root of 1109705 is about 103.5307072803.

The spelling of 1109705 in words is "one million, one hundred nine thousand, seven hundred five".