8104438709 has 2 divisors, whose sum is σ = 8104438710. Its totient is φ = 8104438708.

The previous prime is 8104438703. The next prime is 8104438759. The reversal of 8104438709 is 9078344018.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7543791025 + 560647684 = 86855^2 + 23678^2 .

It is a cyclic number.

It is not a de Polignac number, because 8104438709 - 2⁸ = 8104438453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8104438709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8104438703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4052219354 + 4052219355.

It is an arithmetic number, because the mean of its divisors is an integer number (4052219355).

Almost surely, 2^8104438709 is an apocalyptic number.

It is an amenable number.

8104438709 is a deficient number, since it is larger than the sum of its proper divisors (1).

8104438709 is an equidigital number, since it uses as much as digits as its factorization.

8104438709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 8104438709 is about 90024.6561170883. The cubic root of 8104438709 is about 2008.6656249944.

The spelling of 8104438709 in words is "eight billion, one hundred four million, four hundred thirty-eight thousand, seven hundred nine".