86214217 has 2 divisors, whose sum is σ = 86214218. Its totient is φ = 86214216.

The previous prime is 86214179. The next prime is 86214221. The reversal of 86214217 is 71241268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 10106041 = 8724^2 + 3179^2 .

It is a cyclic number.

It is not a de Polignac number, because 86214217 - 2¹¹ = 86212169 is a prime.

It is not a weakly prime, because it can be changed into another prime (86214277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43107108 + 43107109.

It is an arithmetic number, because the mean of its divisors is an integer number (43107109).

Almost surely, 2^86214217 is an apocalyptic number.

It is an amenable number.

86214217 is a deficient number, since it is larger than the sum of its proper divisors (1).

86214217 is an equidigital number, since it uses as much as digits as its factorization.

86214217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 86214217 is about 9285.1611186882. The cubic root of 86214217 is about 441.7666865128.

The spelling of 86214217 in words is "eighty-six million, two hundred fourteen thousand, two hundred seventeen".