109585897 has 4 divisors (see below), whose sum is σ = 112547716. Its totient is φ = 106624080.

The previous prime is 109585871. The next prime is 109585913. The reversal of 109585897 is 798585901.

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 99920016 + 9665881 = 9996^2 + 3109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109585897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109580897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480854 + ... + 1480927.

It is an arithmetic number, because the mean of its divisors is an integer number (28136929).

Almost surely, 2^109585897 is an apocalyptic number.

It is an amenable number.

109585897 is a deficient number, since it is larger than the sum of its proper divisors (2961819).

109585897 is an equidigital number, since it uses as much as digits as its factorization.

109585897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961818.

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 109585897 is about 10468.3282810581. The cubic root of 109585897 is about 478.5399746844.

The spelling of 109585897 in words is "one hundred nine million, five hundred eighty-five thousand, eight hundred ninety-seven".