8117913 has 4 divisors (see below), whose sum is σ = 10823888. Its totient is φ = 5411940.

The previous prime is 8117903. The next prime is 8117929. The reversal of 8117913 is 3197118.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8117913 - 2⁵ = 8117881 is a prime.

It is a super-2 number, since 2×8117913² = 131801022951138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (8117903) 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, 1352983 + ... + 1352988.

It is an arithmetic number, because the mean of its divisors is an integer number (2705972).

Almost surely, 2^8117913 is an apocalyptic number.

It is an amenable number.

8117913 is a deficient number, since it is larger than the sum of its proper divisors (2705975).

8117913 is a wasteful number, since it uses less digits than its factorization.

8117913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705974.

The product of its digits is 1512, while the sum is 30.

The square root of 8117913 is about 2849.1951495115. The cubic root of 8117913 is about 200.9778198837.

The spelling of 8117913 in words is "eight million, one hundred seventeen thousand, nine hundred thirteen".