86749844 has 24 divisors (see below), whose sum is σ = 161663040. Its totient is φ = 40589696.

The previous prime is 86749841. The next prime is 86749853. The reversal of 86749844 is 44894768.

It is a junction number, because it is equal to n+sod(n) for n = 86749792 and 86749801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86749841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8609 + ... + 15735.

It is an arithmetic number, because the mean of its divisors is an integer number (6735960).

Almost surely, 2^86749844 is an apocalyptic number.

It is an amenable number.

86749844 is a deficient number, since it is larger than the sum of its proper divisors (74913196).

86749844 is a wasteful number, since it uses less digits than its factorization.

86749844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327 (or 7325 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The square root of 86749844 is about 9313.9596305760. The cubic root of 86749844 is about 442.6796597753.

The spelling of 86749844 in words is "eighty-six million, seven hundred forty-nine thousand, eight hundred forty-four".