8638117 has 2 divisors, whose sum is σ = 8638118. Its totient is φ = 8638116.

The previous prime is 8638067. The next prime is 8638121. The reversal of 8638117 is 7118368.

8638117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6791236 + 1846881 = 2606^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 8638117 - 2¹⁹ = 8113829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8638187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4319058 + 4319059.

It is an arithmetic number, because the mean of its divisors is an integer number (4319059).

Almost surely, 2^8638117 is an apocalyptic number.

It is an amenable number.

8638117 is a deficient number, since it is larger than the sum of its proper divisors (1).

8638117 is an equidigital number, since it uses as much as digits as its factorization.

8638117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 8638117 is about 2939.0673690816. The cubic root of 8638117 is about 205.1822056445.

The spelling of 8638117 in words is "eight million, six hundred thirty-eight thousand, one hundred seventeen".