86319847 has 2 divisors, whose sum is σ = 86319848. Its totient is φ = 86319846.

The previous prime is 86319839. The next prime is 86319887. The reversal of 86319847 is 74891368.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86319847 - 2³ = 86319839 is a prime.

It is a super-2 number, since 2×86319847² = 14902231972206818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86319797 and 86319806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86319817) 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, 43159923 + 43159924.

It is an arithmetic number, because the mean of its divisors is an integer number (43159924).

Almost surely, 2^86319847 is an apocalyptic number.

86319847 is a deficient number, since it is larger than the sum of its proper divisors (1).

86319847 is an equidigital number, since it uses as much as digits as its factorization.

86319847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 86319847 is about 9290.8474855634. The cubic root of 86319847 is about 441.9470309777.

The spelling of 86319847 in words is "eighty-six million, three hundred nineteen thousand, eight hundred forty-seven".