139684318 has 8 divisors (see below), whose sum is σ = 209690712. Its totient is φ = 69787416.

The previous prime is 139684289. The next prime is 139684331. The reversal of 139684318 is 813486931.

139684318 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24105 + ... + 29332.

It is an arithmetic number, because the mean of its divisors is an integer number (26211339).

Almost surely, 2^139684318 is an apocalyptic number.

139684318 is a deficient number, since it is larger than the sum of its proper divisors (70006394).

139684318 is a wasteful number, since it uses less digits than its factorization.

139684318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54746.

The product of its digits is 124416, while the sum is 43.

The square root of 139684318 is about 11818.8120384411. The cubic root of 139684318 is about 518.8588362534.

The spelling of 139684318 in words is "one hundred thirty-nine million, six hundred eighty-four thousand, three hundred eighteen".