86989809942 has 24 divisors (see below), whose sum is σ = 215403339216. Its totient is φ = 24854231376.

The previous prime is 86989809923. The next prime is 86989809953. The reversal of 86989809942 is 24990898968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345197533 + ... + 345197784.

It is an arithmetic number, because the mean of its divisors is an integer number (8975139134).

Almost surely, 2^86989809942 is an apocalyptic number.

86989809942 is an abundant number, since it is smaller than the sum of its proper divisors (128413529274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86989809942 is a wasteful number, since it uses less digits than its factorization.

86989809942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690395332 (or 690395329 counting only the distinct ones).

The product of its (nonzero) digits is 161243136, while the sum is 72.

The spelling of 86989809942 in words is "eighty-six billion, nine hundred eighty-nine million, eight hundred nine thousand, nine hundred forty-two".