504038042789 has 4 divisors (see below), whose sum is σ = 508498556556. Its totient is φ = 499577529024.

The previous prime is 504038042777. The next prime is 504038042857. The reversal of 504038042789 is 987240830405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987240830405 = 5 ⋅197448166081.

It can be written as a sum of positive squares in 2 ways, for example, as 54277350625 + 449760692164 = 232975^2 + 670642^2 .

It is a cyclic number.

It is not a de Polignac number, because 504038042789 - 2⁸ = 504038042533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504038042719) 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, 2230256714 + ... + 2230256939.

It is an arithmetic number, because the mean of its divisors is an integer number (127124639139).

Almost surely, 2^504038042789 is an apocalyptic number.

It is an amenable number.

504038042789 is a deficient number, since it is larger than the sum of its proper divisors (4460513767).

504038042789 is a wasteful number, since it uses less digits than its factorization.

504038042789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460513766.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 504038042789 in words is "five hundred four billion, thirty-eight million, forty-two thousand, seven hundred eighty-nine".