8123917 has 2 divisors, whose sum is σ = 8123918. Its totient is φ = 8123916.

The previous prime is 8123897. The next prime is 8123933. The reversal of 8123917 is 7193218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7986276 + 137641 = 2826^2 + 371^2 .

It is a cyclic number.

It is not a de Polignac number, because 8123917 - 2⁷ = 8123789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8123987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4061958 + 4061959.

It is an arithmetic number, because the mean of its divisors is an integer number (4061959).

Almost surely, 2^8123917 is an apocalyptic number.

It is an amenable number.

8123917 is a deficient number, since it is larger than the sum of its proper divisors (1).

8123917 is an equidigital number, since it uses as much as digits as its factorization.

8123917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 8123917 is about 2850.2485856500. The cubic root of 8123917 is about 201.0273553356.

The spelling of 8123917 in words is "eight million, one hundred twenty-three thousand, nine hundred seventeen".