86943924391 has 2 divisors, whose sum is σ = 86943924392. Its totient is φ = 86943924390.

The previous prime is 86943924373. The next prime is 86943924439. The reversal of 86943924391 is 19342934968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86943924391 - 2³⁵ = 52584186023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86943924311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43471962195 + 43471962196.

It is an arithmetic number, because the mean of its divisors is an integer number (43471962196).

Almost surely, 2^86943924391 is an apocalyptic number.

86943924391 is a deficient number, since it is larger than the sum of its proper divisors (1).

86943924391 is an equidigital number, since it uses as much as digits as its factorization.

86943924391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 58.

The spelling of 86943924391 in words is "eighty-six billion, nine hundred forty-three million, nine hundred twenty-four thousand, three hundred ninety-one".