139306117 has 4 divisors (see below), whose sum is σ = 139438476. Its totient is φ = 139173760.

The previous prime is 139306099. The next prime is 139306163. The reversal of 139306117 is 711603931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50211396 + 89094721 = 7086^2 + 9439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139306117 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139301117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64588 + ... + 66709.

It is an arithmetic number, because the mean of its divisors is an integer number (34859619).

Almost surely, 2^139306117 is an apocalyptic number.

It is an amenable number.

139306117 is a deficient number, since it is larger than the sum of its proper divisors (132359).

139306117 is a wasteful number, since it uses less digits than its factorization.

139306117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132358.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 139306117 is about 11802.8012353000. The cubic root of 139306117 is about 518.3901358216.

The spelling of 139306117 in words is "one hundred thirty-nine million, three hundred six thousand, one hundred seventeen".