8053438709 has 4 divisors (see below), whose sum is σ = 8054390604. Its totient is φ = 8052486816.

The previous prime is 8053438507. The next prime is 8053438721. The reversal of 8053438709 is 9078343508.

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 7445964100 + 607474609 = 86290^2 + 24647^2 .

It is a cyclic number.

It is not a de Polignac number, because 8053438709 - 2⁸ = 8053438453 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 (8053438769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463142 + ... + 480215.

It is an arithmetic number, because the mean of its divisors is an integer number (2013597651).

Almost surely, 2^8053438709 is an apocalyptic number.

It is an amenable number.

8053438709 is a deficient number, since it is larger than the sum of its proper divisors (951895).

8053438709 is an equidigital number, since it uses as much as digits as its factorization.

8053438709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951894.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 8053438709 is about 89740.9533546418. The cubic root of 8053438709 is about 2004.4433467742.

The spelling of 8053438709 in words is "eight billion, fifty-three million, four hundred thirty-eight thousand, seven hundred nine".