86989844 has 12 divisors (see below), whose sum is σ = 157143168. Its totient is φ = 42091800.

The previous prime is 86989831. The next prime is 86989853. The reversal of 86989844 is 44898968.

It is a self number, because there is not a number n which added to its sum of digits gives 86989844.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 350642 + ... + 350889.

It is an arithmetic number, because the mean of its divisors is an integer number (13095264).

Almost surely, 2^86989844 is an apocalyptic number.

It is an amenable number.

86989844 is a deficient number, since it is larger than the sum of its proper divisors (70153324).

86989844 is a wasteful number, since it uses less digits than its factorization.

86989844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701566 (or 701564 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 56.

The square root of 86989844 is about 9326.8346184544. The cubic root of 86989844 is about 443.0875194602.

The spelling of 86989844 in words is "eighty-six million, nine hundred eighty-nine thousand, eight hundred forty-four".