86943924439 has 2 divisors, whose sum is σ = 86943924440. Its totient is φ = 86943924438.

The previous prime is 86943924391. The next prime is 86943924461. The reversal of 86943924439 is 93442934968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86943924439 - 2⁷ = 86943924311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86943924479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43471962219 + 43471962220.

It is an arithmetic number, because the mean of its divisors is an integer number (43471962220).

Almost surely, 2^86943924439 is an apocalyptic number.

86943924439 is a deficient number, since it is larger than the sum of its proper divisors (1).

86943924439 is an equidigital number, since it uses as much as digits as its factorization.

86943924439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40310784, while the sum is 61.

The spelling of 86943924439 in words is "eighty-six billion, nine hundred forty-three million, nine hundred twenty-four thousand, four hundred thirty-nine".