8113709 has 4 divisors (see below), whose sum is σ = 8591004. Its totient is φ = 7636416.

The previous prime is 8113691. The next prime is 8113711. The reversal of 8113709 is 9073118.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9073118 = 2 ⋅4536559.

It can be written as a sum of positive squares in 2 ways, for example, as 2184484 + 5929225 = 1478^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 8113709 - 2⁸ = 8113453 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 (8113789) 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, 238622 + ... + 238655.

It is an arithmetic number, because the mean of its divisors is an integer number (2147751).

Almost surely, 2^8113709 is an apocalyptic number.

It is an amenable number.

8113709 is a deficient number, since it is larger than the sum of its proper divisors (477295).

8113709 is a wasteful number, since it uses less digits than its factorization.

8113709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477294.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 8113709 is about 2848.4573017688. The cubic root of 8113709 is about 200.9431206267.

The spelling of 8113709 in words is "eight million, one hundred thirteen thousand, seven hundred nine".