504787405 has 4 divisors (see below), whose sum is σ = 605744892. Its totient is φ = 403829920.

The previous prime is 504787403. The next prime is 504787433.

504787405 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 184878409 + 319908996 = 13597^2 + 17886^2 .

It is not a de Polignac number, because 504787405 - 2¹ = 504787403 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504787403) 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, 50478736 + ... + 50478745.

It is an arithmetic number, because the mean of its divisors is an integer number (151436223).

Almost surely, 2^504787405 is an apocalyptic number.

It is an amenable number.

504787405 is a deficient number, since it is larger than the sum of its proper divisors (100957487).

504787405 is a wasteful number, since it uses less digits than its factorization.

504787405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100957486.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 504787405 is about 22467.4743796449. The cubic root of 504787405 is about 796.2256610653.

The spelling of 504787405 in words is "five hundred four million, seven hundred eighty-seven thousand, four hundred five".