86287519 has 2 divisors, whose sum is σ = 86287520. Its totient is φ = 86287518.

The previous prime is 86287517. The next prime is 86287543. The reversal of 86287519 is 91578268.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86287519 - 2¹ = 86287517 is a prime.

It is a super-2 number, since 2×86287519² = 14891071870350722, which contains 22 as substring.

Together with 86287517, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86287511) 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, 43143759 + 43143760.

It is an arithmetic number, because the mean of its divisors is an integer number (43143760).

Almost surely, 2^86287519 is an apocalyptic number.

86287519 is a deficient number, since it is larger than the sum of its proper divisors (1).

86287519 is an equidigital number, since it uses as much as digits as its factorization.

86287519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 46.

The square root of 86287519 is about 9289.1075459379. The cubic root of 86287519 is about 441.8918522902.

The spelling of 86287519 in words is "eighty-six million, two hundred eighty-seven thousand, five hundred nineteen".