519431944 has 8 divisors (see below), whose sum is σ = 973934910. Its totient is φ = 259715968.

The previous prime is 519431909. The next prime is 519431947. The reversal of 519431944 is 449134915.

It can be written as a sum of positive squares in only one way, i.e., 499522500 + 19909444 = 22350^2 + 4462^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 519431897 and 519431906.

It is not an unprimeable number, because it can be changed into a prime (519431947) 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 as a sum of consecutive naturals, namely, 32464489 + ... + 32464504.

Almost surely, 2^519431944 is an apocalyptic number.

It is an amenable number.

519431944 is a deficient number, since it is larger than the sum of its proper divisors (454502966).

519431944 is a wasteful number, since it uses less digits than its factorization.

519431944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64928999 (or 64928995 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 519431944 is about 22791.0496467363. The cubic root of 519431944 is about 803.8522248476.

The spelling of 519431944 in words is "five hundred nineteen million, four hundred thirty-one thousand, nine hundred forty-four".