139216813 has 8 divisors (see below), whose sum is σ = 143287200. Its totient is φ = 135203568.

The previous prime is 139216811. The next prime is 139216837. The reversal of 139216813 is 318612931.

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

It is a cyclic number.

It is not a de Polignac number, because 139216813 - 2¹ = 139216811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139216811) 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, 9318 + ... + 19111.

It is an arithmetic number, because the mean of its divisors is an integer number (17910900).

Almost surely, 2^139216813 is an apocalyptic number.

It is an amenable number.

139216813 is a deficient number, since it is larger than the sum of its proper divisors (4070387).

139216813 is an equidigital number, since it uses as much as digits as its factorization.

139216813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28571.

The product of its digits is 7776, while the sum is 34.

The square root of 139216813 is about 11799.0174590938. The cubic root of 139216813 is about 518.2793385603.

The spelling of 139216813 in words is "one hundred thirty-nine million, two hundred sixteen thousand, eight hundred thirteen".