5729440309 has 2 divisors, whose sum is σ = 5729440310. Its totient is φ = 5729440308.

The previous prime is 5729440289. The next prime is 5729440331. The reversal of 5729440309 is 9030449275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5722922500 + 6517809 = 75650^2 + 2553^2 .

It is a cyclic number.

It is not a de Polignac number, because 5729440309 - 2¹¹ = 5729438261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5729440399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2864720154 + 2864720155.

It is an arithmetic number, because the mean of its divisors is an integer number (2864720155).

Almost surely, 2^5729440309 is an apocalyptic number.

It is an amenable number.

5729440309 is a deficient number, since it is larger than the sum of its proper divisors (1).

5729440309 is an equidigital number, since it uses as much as digits as its factorization.

5729440309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 5729440309 is about 75693.0664526151. The cubic root of 5729440309 is about 1789.3861287737.

The spelling of 5729440309 in words is "five billion, seven hundred twenty-nine million, four hundred forty thousand, three hundred nine".