509980044 has 108 divisors (see below), whose sum is σ = 1416185064. Its totient is φ = 142394112.

The previous prime is 509980021. The next prime is 509980049. The reversal of 509980044 is 440089905.

It is a junction number, because it is equal to n+sod(n) for n = 509979984 and 509980011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509980049) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4678662 + ... + 4678770.

Almost surely, 2^509980044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 509980044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708092532).

509980044 is an abundant number, since it is smaller than the sum of its proper divisors (906205020).

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

509980044 is a wasteful number, since it uses less digits than its factorization.

509980044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 509980044 is about 22582.7377436838. The cubic root of 509980044 is about 798.9465530040.

The spelling of 509980044 in words is "five hundred nine million, nine hundred eighty thousand, forty-four".