86434147 has 2 divisors, whose sum is σ = 86434148. Its totient is φ = 86434146.

The previous prime is 86434141. The next prime is 86434151. The reversal of 86434147 is 74143468.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86434147 is a prime.

It is not a weakly prime, because it can be changed into another prime (86434141) 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, 43217073 + 43217074.

It is an arithmetic number, because the mean of its divisors is an integer number (43217074).

Almost surely, 2^86434147 is an apocalyptic number.

86434147 is a deficient number, since it is larger than the sum of its proper divisors (1).

86434147 is an equidigital number, since it uses as much as digits as its factorization.

86434147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 86434147 is about 9296.9966655905. The cubic root of 86434147 is about 442.1420122695.

The spelling of 86434147 in words is "eighty-six million, four hundred thirty-four thousand, one hundred forty-seven".