8243799909 has 8 divisors (see below), whose sum is σ = 11469634752. Its totient is φ = 5256915840.

The previous prime is 8243799833. The next prime is 8243800049. The reversal of 8243799909 is 9099973428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8243799909 - 2²⁰ = 8242751333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8243791909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59737612 + ... + 59737749.

It is an arithmetic number, because the mean of its divisors is an integer number (1433704344).

Almost surely, 2^8243799909 is an apocalyptic number.

It is an amenable number.

8243799909 is a deficient number, since it is larger than the sum of its proper divisors (3225834843).

8243799909 is a wasteful number, since it uses less digits than its factorization.

8243799909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119475387.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The square root of 8243799909 is about 90795.3738303885. The cubic root of 8243799909 is about 2020.1137005078.

The spelling of 8243799909 in words is "eight billion, two hundred forty-three million, seven hundred ninety-nine thousand, nine hundred nine".