86239844 has 12 divisors (see below), whose sum is σ = 159797484. Its totient is φ = 40583424.

The previous prime is 86239831. The next prime is 86239847. The reversal of 86239844 is 44893268.

It can be written as a sum of positive squares in 2 ways, for example, as 50694400 + 35545444 = 7120^2 + 5962^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86239795 and 86239804.

It is not an unprimeable number, because it can be changed into a prime (86239847) 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 3 ways as a sum of consecutive naturals, for example, 634049 + ... + 634184.

It is an arithmetic number, because the mean of its divisors is an integer number (13316457).

Almost surely, 2^86239844 is an apocalyptic number.

It is an amenable number.

86239844 is a deficient number, since it is larger than the sum of its proper divisors (73557640).

86239844 is a wasteful number, since it uses less digits than its factorization.

86239844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268254 (or 1268252 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 86239844 is about 9286.5410137467. The cubic root of 86239844 is about 441.8104535917.

The spelling of 86239844 in words is "eighty-six million, two hundred thirty-nine thousand, eight hundred forty-four".