86771239 has 2 divisors, whose sum is σ = 86771240. Its totient is φ = 86771238.

The previous prime is 86771227. The next prime is 86771273. The reversal of 86771239 is 93217768.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86771239 - 2⁵ = 86771207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86771195 and 86771204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86771299) 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, 43385619 + 43385620.

It is an arithmetic number, because the mean of its divisors is an integer number (43385620).

Almost surely, 2^86771239 is an apocalyptic number.

86771239 is a deficient number, since it is larger than the sum of its proper divisors (1).

86771239 is an equidigital number, since it uses as much as digits as its factorization.

86771239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 86771239 is about 9315.1081045794. The cubic root of 86771239 is about 442.7160492848.

The spelling of 86771239 in words is "eighty-six million, seven hundred seventy-one thousand, two hundred thirty-nine".