8242404109 has 4 divisors (see below), whose sum is σ = 8242662204. Its totient is φ = 8242146016.

The previous prime is 8242404103. The next prime is 8242404133. The reversal of 8242404109 is 9014042428.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5836501609 + 2405902500 = 76397^2 + 49050^2 .

It is a cyclic number.

It is not a de Polignac number, because 8242404109 - 2²⁷ = 8108186381 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 (8242404103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73042 + ... + 147715.

It is an arithmetic number, because the mean of its divisors is an integer number (2060665551).

Almost surely, 2^8242404109 is an apocalyptic number.

It is an amenable number.

8242404109 is a deficient number, since it is larger than the sum of its proper divisors (258095).

8242404109 is a wasteful number, since it uses less digits than its factorization.

8242404109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258094.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8242404109 is about 90787.6869900319. The cubic root of 8242404109 is about 2019.9996821390. Note that the first 3 decimals are identical.

The spelling of 8242404109 in words is "eight billion, two hundred forty-two million, four hundred four thousand, one hundred nine".