115891967 has 2 divisors, whose sum is σ = 115891968. Its totient is φ = 115891966.

The previous prime is 115891957. The next prime is 115891991. The reversal of 115891967 is 769198511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115891967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115891927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57945983 + 57945984.

It is an arithmetic number, because the mean of its divisors is an integer number (57945984).

Almost surely, 2^115891967 is an apocalyptic number.

115891967 is a deficient number, since it is larger than the sum of its proper divisors (1).

115891967 is an equidigital number, since it uses as much as digits as its factorization.

115891967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 47.

The square root of 115891967 is about 10765.3131398952. The cubic root of 115891967 is about 487.5484476944.

The spelling of 115891967 in words is "one hundred fifteen million, eight hundred ninety-one thousand, nine hundred sixty-seven".