83439686 has 16 divisors (see below), whose sum is σ = 136719360. Its totient is φ = 37876680.

The previous prime is 83439683. The next prime is 83439701. The reversal of 83439686 is 68693438.

It is a self number, because there is not a number n which added to its sum of digits gives 83439686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83439683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18155 + ... + 22281.

It is an arithmetic number, because the mean of its divisors is an integer number (8544960).

Almost surely, 2^83439686 is an apocalyptic number.

83439686 is a deficient number, since it is larger than the sum of its proper divisors (53279674).

83439686 is a wasteful number, since it uses less digits than its factorization.

83439686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059.

The product of its digits is 746496, while the sum is 47.

The square root of 83439686 is about 9134.5326098274. The cubic root of 83439686 is about 436.9759686003.

The spelling of 83439686 in words is "eighty-three million, four hundred thirty-nine thousand, six hundred eighty-six".