9117939 has 4 divisors (see below), whose sum is σ = 12157256. Its totient is φ = 6078624.

The previous prime is 9117931. The next prime is 9117971. The reversal of 9117939 is 9397119.

9117939 is nontrivially palindromic in base 12.

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

It is not a de Polignac number, because 9117939 - 2³ = 9117931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9117897 and 9117906.

It is not an unprimeable number, because it can be changed into a prime (9117931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519654 + ... + 1519659.

It is an arithmetic number, because the mean of its divisors is an integer number (3039314).

Almost surely, 2^9117939 is an apocalyptic number.

9117939 is a deficient number, since it is larger than the sum of its proper divisors (3039317).

9117939 is a wasteful number, since it uses less digits than its factorization.

9117939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039316.

The product of its digits is 15309, while the sum is 39.

The square root of 9117939 is about 3019.5925221791. The cubic root of 9117939 is about 208.9130457933.

The spelling of 9117939 in words is "nine million, one hundred seventeen thousand, nine hundred thirty-nine".