513439729 has 16 divisors (see below), whose sum is σ = 597360960. Its totient is φ = 436124160.

The previous prime is 513439727. The next prime is 513439753. The reversal of 513439729 is 927934315.

It is a cyclic number.

It is not a de Polignac number, because 513439729 - 2¹ = 513439727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513439727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16117 + ... + 35869.

It is an arithmetic number, because the mean of its divisors is an integer number (37335060).

Almost surely, 2^513439729 is an apocalyptic number.

It is an amenable number.

513439729 is a deficient number, since it is larger than the sum of its proper divisors (83921231).

513439729 is a wasteful number, since it uses less digits than its factorization.

513439729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19920.

The product of its digits is 204120, while the sum is 43.

The square root of 513439729 is about 22659.2084813217. The cubic root of 513439729 is about 800.7491570897.

The spelling of 513439729 in words is "five hundred thirteen million, four hundred thirty-nine thousand, seven hundred twenty-nine".