170808089 has 2 divisors, whose sum is σ = 170808090. Its totient is φ = 170808088.

The previous prime is 170808067. The next prime is 170808103. The reversal of 170808089 is 980808071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121176064 + 49632025 = 11008^2 + 7045^2 .

It is a cyclic number.

It is not a de Polignac number, because 170808089 - 2²⁴ = 154030873 is a prime.

It is not a weakly prime, because it can be changed into another prime (170808019) 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, 85404044 + 85404045.

It is an arithmetic number, because the mean of its divisors is an integer number (85404045).

Almost surely, 2^170808089 is an apocalyptic number.

It is an amenable number.

170808089 is a deficient number, since it is larger than the sum of its proper divisors (1).

170808089 is an equidigital number, since it uses as much as digits as its factorization.

170808089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 170808089 is about 13069.3568701754. The cubic root of 170808089 is about 554.8421908820.

The spelling of 170808089 in words is "one hundred seventy million, eight hundred eight thousand, eighty-nine".