86434217 has 2 divisors, whose sum is σ = 86434218. Its totient is φ = 86434216.

The previous prime is 86434199. The next prime is 86434223. The reversal of 86434217 is 71243468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79138816 + 7295401 = 8896^2 + 2701^2 .

It is a cyclic number.

It is not a de Polignac number, because 86434217 - 2²⁴ = 69657001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86434237) 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, 43217108 + 43217109.

It is an arithmetic number, because the mean of its divisors is an integer number (43217109).

Almost surely, 2^86434217 is an apocalyptic number.

It is an amenable number.

86434217 is a deficient number, since it is larger than the sum of its proper divisors (1).

86434217 is an equidigital number, since it uses as much as digits as its factorization.

86434217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 86434217 is about 9297.0004302463. Note that the first 3 decimals coincide. The cubic root of 86434217 is about 442.1421316279.

The spelling of 86434217 in words is "eighty-six million, four hundred thirty-four thousand, two hundred seventeen".