86380729 has 2 divisors, whose sum is σ = 86380730. Its totient is φ = 86380728.

The previous prime is 86380717. The next prime is 86380741. The reversal of 86380729 is 92708368.

It is a balanced prime because it is at equal distance from previous prime (86380717) and next prime (86380741).

It can be written as a sum of positive squares in only one way, i.e., 71014329 + 15366400 = 8427^2 + 3920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86380729 is a prime.

It is not a weakly prime, because it can be changed into another prime (86380529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43190364 + 43190365.

It is an arithmetic number, because the mean of its divisors is an integer number (43190365).

Almost surely, 2^86380729 is an apocalyptic number.

It is an amenable number.

86380729 is a deficient number, since it is larger than the sum of its proper divisors (1).

86380729 is an equidigital number, since it uses as much as digits as its factorization.

86380729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 86380729 is about 9294.1233583378. The cubic root of 86380729 is about 442.0509093507.

The spelling of 86380729 in words is "eighty-six million, three hundred eighty thousand, seven hundred twenty-nine".