116912291 has 4 divisors (see below), whose sum is σ = 116948232. Its totient is φ = 116876352.

The previous prime is 116912287. The next prime is 116912297. The reversal of 116912291 is 192219611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 116912291 - 2² = 116912287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116912297) 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 3 ways as a sum of consecutive naturals, for example, 12545 + ... + 19778.

It is an arithmetic number, because the mean of its divisors is an integer number (29237058).

Almost surely, 2^116912291 is an apocalyptic number.

116912291 is a deficient number, since it is larger than the sum of its proper divisors (35941).

116912291 is an equidigital number, since it uses as much as digits as its factorization.

116912291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35940.

The product of its digits is 1944, while the sum is 32.

The square root of 116912291 is about 10812.5987163124. The cubic root of 116912291 is about 488.9750768980.

The spelling of 116912291 in words is "one hundred sixteen million, nine hundred twelve thousand, two hundred ninety-one".