115829987 has 8 divisors (see below), whose sum is σ = 142560096. Its totient is φ = 91645632.

The previous prime is 115829983. The next prime is 115829999. The reversal of 115829987 is 789928511.

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

It is not a de Polignac number, because 115829987 - 2² = 115829983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115829983) 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, 636338 + ... + 636519.

It is an arithmetic number, because the mean of its divisors is an integer number (17820012).

Almost surely, 2^115829987 is an apocalyptic number.

115829987 is a deficient number, since it is larger than the sum of its proper divisors (26730109).

115829987 is a wasteful number, since it uses less digits than its factorization.

115829987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272877.

The product of its digits is 362880, while the sum is 50.

The square root of 115829987 is about 10762.4340648387. The cubic root of 115829987 is about 487.4615171902.

The spelling of 115829987 in words is "one hundred fifteen million, eight hundred twenty-nine thousand, nine hundred eighty-seven".