504391944 has 128 divisors (see below), whose sum is σ = 1479628800. Its totient is φ = 140313600.

The previous prime is 504391933. The next prime is 504391961. The reversal of 504391944 is 449193405.

It is a super-2 number, since 2×504391944² = 508822466344198272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1496544 + ... + 1496880.

It is an arithmetic number, because the mean of its divisors is an integer number (11559600).

Almost surely, 2^504391944 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 504391944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739814400).

504391944 is an abundant number, since it is smaller than the sum of its proper divisors (975236856).

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

504391944 is a wasteful number, since it uses less digits than its factorization.

504391944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 504391944 is about 22458.6719108677. The cubic root of 504391944 is about 796.0176801373.

The spelling of 504391944 in words is "five hundred four million, three hundred ninety-one thousand, nine hundred forty-four".