86500439 has 2 divisors, whose sum is σ = 86500440. Its totient is φ = 86500438.

The previous prime is 86500433. The next prime is 86500457. The reversal of 86500439 is 93400568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86500439 - 2⁴ = 86500423 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86500399 and 86500408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86500433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43250219 + 43250220.

It is an arithmetic number, because the mean of its divisors is an integer number (43250220).

Almost surely, 2^86500439 is an apocalyptic number.

86500439 is a deficient number, since it is larger than the sum of its proper divisors (1).

86500439 is an equidigital number, since it uses as much as digits as its factorization.

86500439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 86500439 is about 9300.5612196254. The cubic root of 86500439 is about 442.2550192585.

The spelling of 86500439 in words is "eighty-six million, five hundred thousand, four hundred thirty-nine".