109585709 has 4 divisors (see below), whose sum is σ = 109684416. Its totient is φ = 109487004.

The previous prime is 109585687. The next prime is 109585727. The reversal of 109585709 is 907585901.

It is a happy number.

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: 907585901 = 19 ⋅47767679.

It is a cyclic number.

It is not a de Polignac number, because 109585709 - 2²⁰ = 108537133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 109585709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109581709) 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, 47669 + ... + 49914.

It is an arithmetic number, because the mean of its divisors is an integer number (27421104).

Almost surely, 2^109585709 is an apocalyptic number.

It is an amenable number.

109585709 is a deficient number, since it is larger than the sum of its proper divisors (98707).

109585709 is an equidigital number, since it uses as much as digits as its factorization.

109585709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98706.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 109585709 is about 10468.3193015880. The cubic root of 109585709 is about 478.5397010313.

The spelling of 109585709 in words is "one hundred nine million, five hundred eighty-five thousand, seven hundred nine".