8170139 has 2 divisors, whose sum is σ = 8170140. Its totient is φ = 8170138.

The previous prime is 8170093. The next prime is 8170153. The reversal of 8170139 is 9310718.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8170139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8170189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4085069 + 4085070.

It is an arithmetic number, because the mean of its divisors is an integer number (4085070).

Almost surely, 2^8170139 is an apocalyptic number.

8170139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8170139 is an equidigital number, since it uses as much as digits as its factorization.

8170139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 8170139 is about 2858.3455004600. The cubic root of 8170139 is about 201.4078909597.

The spelling of 8170139 in words is "eight million, one hundred seventy thousand, one hundred thirty-nine".