8350861217 has 2 divisors, whose sum is σ = 8350861218. Its totient is φ = 8350861216.

The previous prime is 8350861177. The next prime is 8350861231. The reversal of 8350861217 is 7121680538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4725737536 + 3625123681 = 68744^2 + 60209^2 .

It is a cyclic number.

It is not a de Polignac number, because 8350861217 - 2⁶ = 8350861153 is a prime.

It is not a weakly prime, because it can be changed into another prime (8350861297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4175430608 + 4175430609.

It is an arithmetic number, because the mean of its divisors is an integer number (4175430609).

Almost surely, 2^8350861217 is an apocalyptic number.

It is an amenable number.

8350861217 is a deficient number, since it is larger than the sum of its proper divisors (1).

8350861217 is an equidigital number, since it uses as much as digits as its factorization.

8350861217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 8350861217 is about 91383.0466607456. The cubic root of 8350861217 is about 2028.8211114797.

The spelling of 8350861217 in words is "eight billion, three hundred fifty million, eight hundred sixty-one thousand, two hundred seventeen".