139216317 has 8 divisors (see below), whose sum is σ = 185781120. Its totient is φ = 92731200.

The previous prime is 139216307. The next prime is 139216379. The reversal of 139216317 is 713612931.

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

It is not a de Polignac number, because 139216317 - 2⁸ = 139216061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139216307) 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 7 ways as a sum of consecutive naturals, for example, 15717 + ... + 22922.

It is an arithmetic number, because the mean of its divisors is an integer number (23222640).

Almost surely, 2^139216317 is an apocalyptic number.

It is an amenable number.

139216317 is a deficient number, since it is larger than the sum of its proper divisors (46564803).

139216317 is a wasteful number, since it uses less digits than its factorization.

139216317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39843.

The product of its digits is 6804, while the sum is 33.

The square root of 139216317 is about 11798.9964403758. The cubic root of 139216317 is about 518.2787230531.

The spelling of 139216317 in words is "one hundred thirty-nine million, two hundred sixteen thousand, three hundred seventeen".