5684728309 has 4 divisors (see below), whose sum is σ = 6122015116. Its totient is φ = 5247441504.

The previous prime is 5684728303. The next prime is 5684728319. The reversal of 5684728309 is 9038274865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9038274865 = 5 ⋅1807654973.

It can be written as a sum of positive squares in 2 ways, for example, as 3395392900 + 2289335409 = 58270^2 + 47847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5684728309 is a prime.

It is a super-2 number, since 2×5684728309² = 64632271894291998962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5684728303) 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, 218643384 + ... + 218643409.

It is an arithmetic number, because the mean of its divisors is an integer number (1530503779).

Almost surely, 2^5684728309 is an apocalyptic number.

It is an amenable number.

5684728309 is a deficient number, since it is larger than the sum of its proper divisors (437286807).

5684728309 is a wasteful number, since it uses less digits than its factorization.

5684728309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437286806.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The square root of 5684728309 is about 75397.1372732413. The cubic root of 5684728309 is about 1784.7192353432.

The spelling of 5684728309 in words is "five billion, six hundred eighty-four million, seven hundred twenty-eight thousand, three hundred nine".