80109173 has 2 divisors, whose sum is σ = 80109174. Its totient is φ = 80109172.

The previous prime is 80109163. The next prime is 80109179. The reversal of 80109173 is 37190108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66618244 + 13490929 = 8162^2 + 3673^2 .

It is a cyclic number.

It is not a de Polignac number, because 80109173 - 2⁴ = 80109157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80109179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40054586 + 40054587.

It is an arithmetic number, because the mean of its divisors is an integer number (40054587).

Almost surely, 2^80109173 is an apocalyptic number.

It is an amenable number.

80109173 is a deficient number, since it is larger than the sum of its proper divisors (1).

80109173 is an equidigital number, since it uses as much as digits as its factorization.

80109173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 80109173 is about 8950.3727855325. The cubic root of 80109173 is about 431.0828539957.

The spelling of 80109173 in words is "eighty million, one hundred nine thousand, one hundred seventy-three".