139590686 has 16 divisors (see below), whose sum is σ = 214459488. Its totient is φ = 68124000.

The previous prime is 139590683. The next prime is 139590707. The reversal of 139590686 is 686095931.

139590686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139590686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139590683) 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, 9476 + ... + 19208.

It is an arithmetic number, because the mean of its divisors is an integer number (13403718).

Almost surely, 2^139590686 is an apocalyptic number.

139590686 is a deficient number, since it is larger than the sum of its proper divisors (74868802).

139590686 is a wasteful number, since it uses less digits than its factorization.

139590686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9907.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 139590686 is about 11814.8502318057. The cubic root of 139590686 is about 518.7428779977.

The spelling of 139590686 in words is "one hundred thirty-nine million, five hundred ninety thousand, six hundred eighty-six".