5809945729 has 9 divisors (see below), whose sum is σ = 6759129027. Its totient is φ = 4979496144.

The previous prime is 5809945727. The next prime is 5809945733. The reversal of 5809945729 is 9275499085.

The square root of 5809945729 is 76223.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 178944129 + 5631001600 = 13377^2 + 75040^2 .

It is not a de Polignac number, because 5809945729 - 2¹ = 5809945727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5809945727) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 528117 + ... + 539005.

Almost surely, 2^5809945729 is an apocalyptic number.

5809945729 is the 76223-rd square number.

5809945729 is the 38112-nd centered octagonal number.

It is an amenable number.

5809945729 is a deficient number, since it is larger than the sum of its proper divisors (949183298).

5809945729 is an frugal number, since it uses more digits than its factorization.

5809945729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21792 (or 10896 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 58.

The cubic root of 5809945729 is about 1797.7281759598.

The spelling of 5809945729 in words is "five billion, eight hundred nine million, nine hundred forty-five thousand, seven hundred twenty-nine".