169127117 has 2 divisors, whose sum is σ = 169127118. Its totient is φ = 169127116.

The previous prime is 169127047. The next prime is 169127129. The reversal of 169127117 is 711721961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122190916 + 46936201 = 11054^2 + 6851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169127117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169127137) 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, 84563558 + 84563559.

It is an arithmetic number, because the mean of its divisors is an integer number (84563559).

Almost surely, 2^169127117 is an apocalyptic number.

It is an amenable number.

169127117 is a deficient number, since it is larger than the sum of its proper divisors (1).

169127117 is an equidigital number, since it uses as much as digits as its factorization.

169127117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 35.

The square root of 169127117 is about 13004.8881963668. Note that the first 3 decimals coincide. The cubic root of 169127117 is about 553.0160662067.

The spelling of 169127117 in words is "one hundred sixty-nine million, one hundred twenty-seven thousand, one hundred seventeen".