171080869 has 2 divisors, whose sum is σ = 171080870. Its totient is φ = 171080868.

The previous prime is 171080867. The next prime is 171080939. The reversal of 171080869 is 968080171.

171080869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140422500 + 30658369 = 11850^2 + 5537^2 .

It is an emirp because it is prime and its reverse (968080171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171080869 - 2¹ = 171080867 is a prime.

It is a super-2 number, since 2×171080869² = 58537327475590322, which contains 22 as substring.

Together with 171080867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171080867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85540434 + 85540435.

It is an arithmetic number, because the mean of its divisors is an integer number (85540435).

Almost surely, 2^171080869 is an apocalyptic number.

It is an amenable number.

171080869 is a deficient number, since it is larger than the sum of its proper divisors (1).

171080869 is an equidigital number, since it uses as much as digits as its factorization.

171080869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 171080869 is about 13079.7885686276. The cubic root of 171080869 is about 555.1373942233.

The spelling of 171080869 in words is "one hundred seventy-one million, eighty thousand, eight hundred sixty-nine".