86384729 has 2 divisors, whose sum is σ = 86384730. Its totient is φ = 86384728.

The previous prime is 86384713. The next prime is 86384759. The reversal of 86384729 is 92748368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75342400 + 11042329 = 8680^2 + 3323^2 .

It is a cyclic number.

It is not a de Polignac number, because 86384729 - 2⁴ = 86384713 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86384759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43192364 + 43192365.

It is an arithmetic number, because the mean of its divisors is an integer number (43192365).

Almost surely, 2^86384729 is an apocalyptic number.

It is an amenable number.

86384729 is a deficient number, since it is larger than the sum of its proper divisors (1).

86384729 is an equidigital number, since it uses as much as digits as its factorization.

86384729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 86384729 is about 9294.3385455878. The cubic root of 86384729 is about 442.0577325406.

The spelling of 86384729 in words is "eighty-six million, three hundred eighty-four thousand, seven hundred twenty-nine".