11109709 has 4 divisors (see below), whose sum is σ = 11964316. Its totient is φ = 10255104.

The previous prime is 11109689. The next prime is 11109727. The reversal of 11109709 is 90790111.

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 4622500 + 6487209 = 2150^2 + 2547^2 .

It is a cyclic number.

It is not a de Polignac number, because 11109709 - 2¹¹ = 11107661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109809) 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, 427284 + ... + 427309.

It is an arithmetic number, because the mean of its divisors is an integer number (2991079).

Almost surely, 2^11109709 is an apocalyptic number.

It is an amenable number.

11109709 is a deficient number, since it is larger than the sum of its proper divisors (854607).

11109709 is an equidigital number, since it uses as much as digits as its factorization.

11109709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854606.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 11109709 is about 3333.1230100313. The cubic root of 11109709 is about 223.1349301054.

The spelling of 11109709 in words is "eleven million, one hundred nine thousand, seven hundred nine".