171116999 has 2 divisors, whose sum is σ = 171117000. Its totient is φ = 171116998.

The previous prime is 171116977. The next prime is 171117031. The reversal of 171116999 is 999611171.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171116999 is a prime.

It is a Sophie Germain 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 (171119999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85558499 + 85558500.

It is an arithmetic number, because the mean of its divisors is an integer number (85558500).

Almost surely, 2^171116999 is an apocalyptic number.

171116999 is a deficient number, since it is larger than the sum of its proper divisors (1).

171116999 is an equidigital number, since it uses as much as digits as its factorization.

171116999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 44.

The square root of 171116999 is about 13081.1696342491. The cubic root of 171116999 is about 555.1764706796.

The spelling of 171116999 in words is "one hundred seventy-one million, one hundred sixteen thousand, nine hundred ninety-nine".