115891443 has 24 divisors (see below), whose sum is σ = 171793440. Its totient is φ = 75254400.

The previous prime is 115891421. The next prime is 115891459. The reversal of 115891443 is 344198511.

It is not a de Polignac number, because 115891443 - 2¹² = 115887347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115891398 and 115891407.

It is not an unprimeable number, because it can be changed into a prime (115891463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71223 + ... + 72831.

It is an arithmetic number, because the mean of its divisors is an integer number (7158060).

Almost surely, 2^115891443 is an apocalyptic number.

115891443 is a deficient number, since it is larger than the sum of its proper divisors (55901997).

115891443 is a wasteful number, since it uses less digits than its factorization.

115891443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1816 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 115891443 is about 10765.2888024428. The cubic root of 115891443 is about 487.5477128843.

The spelling of 115891443 in words is "one hundred fifteen million, eight hundred ninety-one thousand, four hundred forty-three".