86768399 has 2 divisors, whose sum is σ = 86768400. Its totient is φ = 86768398.

The previous prime is 86768389. The next prime is 86768419. The reversal of 86768399 is 99386768.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86768399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86768309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43384199 + 43384200.

It is an arithmetic number, because the mean of its divisors is an integer number (43384200).

Almost surely, 2^86768399 is an apocalyptic number.

86768399 is a deficient number, since it is larger than the sum of its proper divisors (1).

86768399 is an equidigital number, since it uses as much as digits as its factorization.

86768399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 56.

The square root of 86768399 is about 9314.9556628038. The cubic root of 86768399 is about 442.7112192385.

The spelling of 86768399 in words is "eighty-six million, seven hundred sixty-eight thousand, three hundred ninety-nine".