8109047 has 4 divisors (see below), whose sum is σ = 8120760. Its totient is φ = 8097336.

The previous prime is 8109007. The next prime is 8109061. The reversal of 8109047 is 7409018.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8109047 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8109007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4748 + ... + 6225.

It is an arithmetic number, because the mean of its divisors is an integer number (2030190).

Almost surely, 2^8109047 is an apocalyptic number.

8109047 is a deficient number, since it is larger than the sum of its proper divisors (11713).

8109047 is a wasteful number, since it uses less digits than its factorization.

8109047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11712.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8109047 is about 2847.6388464832. The cubic root of 8109047 is about 200.9046270800.

Subtracting from 8109047 its sum of digits (29), we obtain a palindrome (8109018).

The spelling of 8109047 in words is "eight million, one hundred nine thousand, forty-seven".