509442044 has 12 divisors (see below), whose sum is σ = 891912000. Its totient is φ = 254610048.

The previous prime is 509442013. The next prime is 509442047. The reversal of 509442044 is 440244905.

It is a self number, because there is not a number n which added to its sum of digits gives 509442044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509442047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16949 + ... + 36140.

It is an arithmetic number, because the mean of its divisors is an integer number (74326000).

Almost surely, 2^509442044 is an apocalyptic number.

It is an amenable number.

509442044 is a deficient number, since it is larger than the sum of its proper divisors (382469956).

509442044 is a wasteful number, since it uses less digits than its factorization.

509442044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55492 (or 55490 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 509442044 is about 22570.8228472070. The cubic root of 509442044 is about 798.6655063963.

Adding to 509442044 its reverse (440244905), we get a palindrome (949686949).

The spelling of 509442044 in words is "five hundred nine million, four hundred forty-two thousand, forty-four".