86471939629 has 2 divisors, whose sum is σ = 86471939630. Its totient is φ = 86471939628.

The previous prime is 86471939591. The next prime is 86471939633. The reversal of 86471939629 is 92693917468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86143424004 + 328515625 = 293502^2 + 18125^2 .

It is a cyclic number.

It is not a de Polignac number, because 86471939629 - 2¹⁷ = 86471808557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86471939329) 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, 43235969814 + 43235969815.

It is an arithmetic number, because the mean of its divisors is an integer number (43235969815).

Almost surely, 2^86471939629 is an apocalyptic number.

It is an amenable number.

86471939629 is a deficient number, since it is larger than the sum of its proper divisors (1).

86471939629 is an equidigital number, since it uses as much as digits as its factorization.

86471939629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 64.

The spelling of 86471939629 in words is "eighty-six billion, four hundred seventy-one million, nine hundred thirty-nine thousand, six hundred twenty-nine".