8140838409 has 12 divisors (see below), whose sum is σ = 12827987952. Its totient is φ = 4933841400.

The previous prime is 8140838371. The next prime is 8140838449. The reversal of 8140838409 is 9048380418.

It is not a de Polignac number, because 8140838409 - 2¹⁵ = 8140805641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8140838449) 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 11 ways as a sum of consecutive naturals, for example, 41115247 + ... + 41115444.

It is an arithmetic number, because the mean of its divisors is an integer number (1068998996).

Almost surely, 2^8140838409 is an apocalyptic number.

It is an amenable number.

8140838409 is a deficient number, since it is larger than the sum of its proper divisors (4687149543).

8140838409 is a wasteful number, since it uses less digits than its factorization.

8140838409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82230708 (or 82230705 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 8140838409 is about 90226.5947988729. The cubic root of 8140838409 is about 2011.6683267718.

The spelling of 8140838409 in words is "eight billion, one hundred forty million, eight hundred thirty-eight thousand, four hundred nine".