86247719 has 2 divisors, whose sum is σ = 86247720. Its totient is φ = 86247718.

The previous prime is 86247713. The next prime is 86247737. The reversal of 86247719 is 91774268.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86247719 - 2¹⁶ = 86182183 is a prime.

It is a super-2 number, since 2×86247719² = 14877338065405922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86247719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86247713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43123859 + 43123860.

It is an arithmetic number, because the mean of its divisors is an integer number (43123860).

Almost surely, 2^86247719 is an apocalyptic number.

86247719 is a deficient number, since it is larger than the sum of its proper divisors (1).

86247719 is an equidigital number, since it uses as much as digits as its factorization.

86247719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 86247719 is about 9286.9650047795. The cubic root of 86247719 is about 441.8239011711.

The spelling of 86247719 in words is "eighty-six million, two hundred forty-seven thousand, seven hundred nineteen".