86234609 has 2 divisors, whose sum is σ = 86234610. Its totient is φ = 86234608.

The previous prime is 86234573. The next prime is 86234611. The reversal of 86234609 is 90643268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85840225 + 394384 = 9265^2 + 628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86234609 is a prime.

Together with 86234611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86234689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43117304 + 43117305.

It is an arithmetic number, because the mean of its divisors is an integer number (43117305).

Almost surely, 2^86234609 is an apocalyptic number.

It is an amenable number.

86234609 is a deficient number, since it is larger than the sum of its proper divisors (1).

86234609 is an equidigital number, since it uses as much as digits as its factorization.

86234609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 86234609 is about 9286.2591499484. The cubic root of 86234609 is about 441.8015137003.

The spelling of 86234609 in words is "eighty-six million, two hundred thirty-four thousand, six hundred nine".