8117623939 has 4 divisors (see below), whose sum is σ = 8122078656. Its totient is φ = 8113169224.

The previous prime is 8117623937. The next prime is 8117623957. The reversal of 8117623939 is 9393267118.

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

It is a cyclic number.

It is not a de Polignac number, because 8117623939 - 2¹ = 8117623937 is a prime.

It is a Smith number, since the sum of its digits (49) 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 junction number, because it is equal to n+sod(n) for n = 8117623892 and 8117623901.

It is not an unprimeable number, because it can be changed into a prime (8117623937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224624 + ... + 2228269.

It is an arithmetic number, because the mean of its divisors is an integer number (2030519664).

Almost surely, 2^8117623939 is an apocalyptic number.

8117623939 is a deficient number, since it is larger than the sum of its proper divisors (4454717).

8117623939 is a wasteful number, since it uses less digits than its factorization.

8117623939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454716.

The product of its digits is 489888, while the sum is 49.

The square root of 8117623939 is about 90097.8575716426. The cubic root of 8117623939 is about 2009.7543439620.

The spelling of 8117623939 in words is "eight billion, one hundred seventeen million, six hundred twenty-three thousand, nine hundred thirty-nine".