116999161 has 2 divisors, whose sum is σ = 116999162. Its totient is φ = 116999160.

The previous prime is 116999153. The next prime is 116999167. The reversal of 116999161 is 161999611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102414400 + 14584761 = 10120^2 + 3819^2 .

It is an emirp because it is prime and its reverse (161999611) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 191666911 and 119666191.

It is a cyclic number.

It is not a de Polignac number, because 116999161 - 2³ = 116999153 is a prime.

It is not a weakly prime, because it can be changed into another prime (116999167) 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 as a sum of consecutive naturals, namely, 58499580 + 58499581.

It is an arithmetic number, because the mean of its divisors is an integer number (58499581).

Almost surely, 2^116999161 is an apocalyptic number.

It is an amenable number.

116999161 is a deficient number, since it is larger than the sum of its proper divisors (1).

116999161 is an equidigital number, since it uses as much as digits as its factorization.

116999161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 43.

The square root of 116999161 is about 10816.6150435337. The cubic root of 116999161 is about 489.0961555522.

The spelling of 116999161 in words is "one hundred sixteen million, nine hundred ninety-nine thousand, one hundred sixty-one".