115985197 has 4 divisors (see below), whose sum is σ = 116007516. Its totient is φ = 115962880.

The previous prime is 115985189. The next prime is 115985201. The reversal of 115985197 is 791589511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 791589511 = 809 ⋅978479.

It can be written as a sum of positive squares in 2 ways, for example, as 85581001 + 30404196 = 9251^2 + 5514^2 .

It is a cyclic number.

It is not a de Polignac number, because 115985197 - 2³ = 115985189 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 (115985137) 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, 1197 + ... + 15277.

It is an arithmetic number, because the mean of its divisors is an integer number (29001879).

Almost surely, 2^115985197 is an apocalyptic number.

It is an amenable number.

115985197 is a deficient number, since it is larger than the sum of its proper divisors (22319).

115985197 is an equidigital number, since it uses as much as digits as its factorization.

115985197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22318.

The product of its digits is 113400, while the sum is 46.

The square root of 115985197 is about 10769.6423803207. The cubic root of 115985197 is about 487.6791497606.

The spelling of 115985197 in words is "one hundred fifteen million, nine hundred eighty-five thousand, one hundred ninety-seven".