86210129 has 2 divisors, whose sum is σ = 86210130. Its totient is φ = 86210128.

The previous prime is 86210107. The next prime is 86210149. The reversal of 86210129 is 92101268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76300225 + 9909904 = 8735^2 + 3148^2 .

It is a cyclic number.

It is not a de Polignac number, because 86210129 - 2¹² = 86206033 is a prime.

It is not a weakly prime, because it can be changed into another prime (86210149) 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, 43105064 + 43105065.

It is an arithmetic number, because the mean of its divisors is an integer number (43105065).

Almost surely, 2^86210129 is an apocalyptic number.

It is an amenable number.

86210129 is a deficient number, since it is larger than the sum of its proper divisors (1).

86210129 is an equidigital number, since it uses as much as digits as its factorization.

86210129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 86210129 is about 9284.9409798878. The cubic root of 86210129 is about 441.7597040188.

The spelling of 86210129 in words is "eighty-six million, two hundred ten thousand, one hundred twenty-nine".