115391869 has 8 divisors (see below), whose sum is σ = 123302520. Its totient is φ = 107606016.

The previous prime is 115391867. The next prime is 115391893. The reversal of 115391869 is 968193511.

It can be written as a sum of positive squares in 4 ways, for example, as 33489369 + 81902500 = 5787^2 + 9050^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115391869 - 2¹ = 115391867 is a prime.

It is a super-2 number, since 2×115391869² = 26630566862626322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115391867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29284 + ... + 32989.

It is an arithmetic number, because the mean of its divisors is an integer number (15412815).

Almost surely, 2^115391869 is an apocalyptic number.

It is an amenable number.

115391869 is a deficient number, since it is larger than the sum of its proper divisors (7910651).

115391869 is a wasteful number, since it uses less digits than its factorization.

115391869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62399.

The product of its digits is 58320, while the sum is 43.

The square root of 115391869 is about 10742.0607427067. The cubic root of 115391869 is about 486.8461454631.

The spelling of 115391869 in words is "one hundred fifteen million, three hundred ninety-one thousand, eight hundred sixty-nine".