86139748 has 12 divisors (see below), whose sum is σ = 159612012. Its totient is φ = 40536320.

The previous prime is 86139733. The next prime is 86139751. The reversal of 86139748 is 84793168.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39463524 + 46676224 = 6282^2 + 6832^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86139698 and 86139707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633313 + ... + 633448.

It is an arithmetic number, because the mean of its divisors is an integer number (13301001).

Almost surely, 2^86139748 is an apocalyptic number.

It is an amenable number.

86139748 is a deficient number, since it is larger than the sum of its proper divisors (73472264).

86139748 is a wasteful number, since it uses less digits than its factorization.

86139748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266782 (or 1266780 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 86139748 is about 9281.1501442440. The cubic root of 86139748 is about 441.6394553703.

The spelling of 86139748 in words is "eighty-six million, one hundred thirty-nine thousand, seven hundred forty-eight".