116915217 has 4 divisors (see below), whose sum is σ = 155886960. Its totient is φ = 77943476.

The previous prime is 116915209. The next prime is 116915219. The reversal of 116915217 is 712519611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 116915217 - 2³ = 116915209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (116915219) 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, 19485867 + ... + 19485872.

It is an arithmetic number, because the mean of its divisors is an integer number (38971740).

Almost surely, 2^116915217 is an apocalyptic number.

It is an amenable number.

116915217 is a deficient number, since it is larger than the sum of its proper divisors (38971743).

116915217 is an equidigital number, since it uses as much as digits as its factorization.

116915217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38971742.

The product of its digits is 3780, while the sum is 33.

The square root of 116915217 is about 10812.7340205889. The cubic root of 116915217 is about 488.9791561074.

The spelling of 116915217 in words is "one hundred sixteen million, nine hundred fifteen thousand, two hundred seventeen".