519969444 has 12 divisors (see below), whose sum is σ = 1213262064. Its totient is φ = 173323144.

The previous prime is 519969433. The next prime is 519969451. The reversal of 519969444 is 444969915.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 21665382 + ... + 21665405.

It is an arithmetic number, because the mean of its divisors is an integer number (101105172).

Almost surely, 2^519969444 is an apocalyptic number.

It is an amenable number.

519969444 is an abundant number, since it is smaller than the sum of its proper divisors (693292620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

519969444 is a wasteful number, since it uses less digits than its factorization.

519969444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43330794 (or 43330792 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 519969444 is about 22802.8385075192. The cubic root of 519969444 is about 804.1294004739.

The spelling of 519969444 in words is "five hundred nineteen million, nine hundred sixty-nine thousand, four hundred forty-four".