86317493 has 2 divisors, whose sum is σ = 86317494. Its totient is φ = 86317492.

The previous prime is 86317481. The next prime is 86317537. The reversal of 86317493 is 39471368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59089969 + 27227524 = 7687^2 + 5218^2 .

It is a cyclic number.

It is not a de Polignac number, because 86317493 - 2¹² = 86313397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86317493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86317403) 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, 43158746 + 43158747.

It is an arithmetic number, because the mean of its divisors is an integer number (43158747).

Almost surely, 2^86317493 is an apocalyptic number.

It is an amenable number.

86317493 is a deficient number, since it is larger than the sum of its proper divisors (1).

86317493 is an equidigital number, since it uses as much as digits as its factorization.

86317493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 86317493 is about 9290.7208008851. The cubic root of 86317493 is about 441.9430135440.

The spelling of 86317493 in words is "eighty-six million, three hundred seventeen thousand, four hundred ninety-three".