86404040447 has 2 divisors, whose sum is σ = 86404040448. Its totient is φ = 86404040446.

The previous prime is 86404040431. The next prime is 86404040477. The reversal of 86404040447 is 74404040468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86404040447 - 2⁴ = 86404040431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86404040417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43202020223 + 43202020224.

It is an arithmetic number, because the mean of its divisors is an integer number (43202020224).

Almost surely, 2^86404040447 is an apocalyptic number.

86404040447 is a deficient number, since it is larger than the sum of its proper divisors (1).

86404040447 is an equidigital number, since it uses as much as digits as its factorization.

86404040447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344064, while the sum is 41.

The spelling of 86404040447 in words is "eighty-six billion, four hundred four million, forty thousand, four hundred forty-seven".