115941987 has 36 divisors (see below), whose sum is σ = 195712920. Its totient is φ = 65947392.

The previous prime is 115941949. The next prime is 115942019. The reversal of 115941987 is 789149511.

It is a happy number.

115941987 is a `hidden beast` number, since 1 + 159 + 419 + 87 = 666.

It is not a de Polignac number, because 115941987 - 2⁶ = 115941923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115941487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 124339 + ... + 125267.

It is an arithmetic number, because the mean of its divisors is an integer number (5436470).

Almost surely, 2^115941987 is an apocalyptic number.

115941987 is a deficient number, since it is larger than the sum of its proper divisors (79770933).

115941987 is a wasteful number, since it uses less digits than its factorization.

115941987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232 (or 1222 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 115941987 is about 10767.6360915477. The cubic root of 115941987 is about 487.6185810156.

The spelling of 115941987 in words is "one hundred fifteen million, nine hundred forty-one thousand, nine hundred eighty-seven".