115869 has 8 divisors (see below), whose sum is σ = 166432. Its totient is φ = 71280.

The previous prime is 115861. The next prime is 115873. The reversal of 115869 is 968511.

It is a happy number.

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

It is not a de Polignac number, because 115869 - 2³ = 115861 is a prime.

It is a super-2 number, since 2×115869² = 26851250322, which contains 22 as substring.

It is a Duffinian number.

115869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1447 + ... + 1524.

It is an arithmetic number, because the mean of its divisors is an integer number (20804).

2¹¹⁵⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

115869 is a deficient number, since it is larger than the sum of its proper divisors (50563).

115869 is a wasteful number, since it uses less digits than its factorization.

115869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987.

The product of its digits is 2160, while the sum is 30.

The square root of 115869 is about 340.3953583702. The cubic root of 115869 is about 48.7516238775.

The spelling of 115869 in words is "one hundred fifteen thousand, eight hundred sixty-nine".