513799844 has 24 divisors (see below), whose sum is σ = 939207360. Its totient is φ = 245627424.

The previous prime is 513799799. The next prime is 513799849. The reversal of 513799844 is 448997315.

It is a junction number, because it is equal to n+sod(n) for n = 513799792 and 513799801.

It is not an unprimeable number, because it can be changed into a prime (513799849) 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 7 ways as a sum of consecutive naturals, for example, 9554 + ... + 33449.

It is an arithmetic number, because the mean of its divisors is an integer number (39133640).

Almost surely, 2^513799844 is an apocalyptic number.

It is an amenable number.

513799844 is a deficient number, since it is larger than the sum of its proper divisors (425407516).

513799844 is a wasteful number, since it uses less digits than its factorization.

513799844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43139 (or 43137 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 513799844 is about 22667.1534163423. The cubic root of 513799844 is about 800.9363224478.

The spelling of 513799844 in words is "five hundred thirteen million, seven hundred ninety-nine thousand, eight hundred forty-four".