8117399 has 4 divisors (see below), whose sum is σ = 8124480. Its totient is φ = 8110320.

The previous prime is 8117383. The next prime is 8117401. The reversal of 8117399 is 9937118.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9937118 = 2 ⋅4968559.

It is a cyclic number.

It is not a de Polignac number, because 8117399 - 2⁴ = 8117383 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 (8117099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1382 + ... + 4259.

It is an arithmetic number, because the mean of its divisors is an integer number (2031120).

Almost surely, 2^8117399 is an apocalyptic number.

8117399 is a deficient number, since it is larger than the sum of its proper divisors (7081).

8117399 is a wasteful number, since it uses less digits than its factorization.

8117399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080.

The product of its digits is 13608, while the sum is 38.

The square root of 8117399 is about 2849.1049471720. The cubic root of 8117399 is about 200.9735780389.

The spelling of 8117399 in words is "eight million, one hundred seventeen thousand, three hundred ninety-nine".