80494217 has 2 divisors, whose sum is σ = 80494218. Its totient is φ = 80494216.

The previous prime is 80494163. The next prime is 80494223. The reversal of 80494217 is 71249408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80478841 + 15376 = 8971^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 80494217 - 2⁶ = 80494153 is a prime.

It is not a weakly prime, because it can be changed into another prime (80494247) 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, 40247108 + 40247109.

It is an arithmetic number, because the mean of its divisors is an integer number (40247109).

Almost surely, 2^80494217 is an apocalyptic number.

It is an amenable number.

80494217 is a deficient number, since it is larger than the sum of its proper divisors (1).

80494217 is an equidigital number, since it uses as much as digits as its factorization.

80494217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 80494217 is about 8971.8569426847. The cubic root of 80494217 is about 431.7724156342.

The spelling of 80494217 in words is "eighty million, four hundred ninety-four thousand, two hundred seventeen".