504239805 has 24 divisors (see below), whose sum is σ = 925429752. Its totient is φ = 253108224.

The previous prime is 504239779. The next prime is 504239807. The reversal of 504239805 is 508932405.

It can be written as a sum of positive squares in 4 ways, for example, as 201270969 + 302968836 = 14187^2 + 17406^2 .

It is not a de Polignac number, because 504239805 - 2¹¹ = 504237757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 504239805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504239807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328804 + ... + 330333.

It is an arithmetic number, because the mean of its divisors is an integer number (38559573).

Almost surely, 2^504239805 is an apocalyptic number.

It is an amenable number.

504239805 is a deficient number, since it is larger than the sum of its proper divisors (421189947).

504239805 is a wasteful number, since it uses less digits than its factorization.

504239805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659165 (or 659162 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 504239805 is about 22455.2845673351. The cubic root of 504239805 is about 795.9376382085.

The spelling of 504239805 in words is "five hundred four million, two hundred thirty-nine thousand, eight hundred five".