115900443 has 16 divisors (see below), whose sum is σ = 177626400. Its totient is φ = 74602080.

The previous prime is 115900439. The next prime is 115900451. The reversal of 115900443 is 344009511.

It is not a de Polignac number, because 115900443 - 2² = 115900439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115900943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73228 + ... + 74793.

It is an arithmetic number, because the mean of its divisors is an integer number (11101650).

Almost surely, 2^115900443 is an apocalyptic number.

115900443 is a deficient number, since it is larger than the sum of its proper divisors (61725957).

115900443 is a wasteful number, since it uses less digits than its factorization.

115900443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148059 (or 148053 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 115900443 is about 10765.7068044787. The cubic root of 115900443 is about 487.5603333612.

Adding to 115900443 its reverse (344009511), we get a palindrome (459909954).

The spelling of 115900443 in words is "one hundred fifteen million, nine hundred thousand, four hundred forty-three".