505440004 has 12 divisors (see below), whose sum is σ = 884699200. Its totient is φ = 252668808.

The previous prime is 505439993. The next prime is 505440007. The reversal of 505440004 is 400044505.

It is not an unprimeable number, because it can be changed into a prime (505440007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17257 + ... + 36175.

Almost surely, 2^505440004 is an apocalyptic number.

It is an amenable number.

505440004 is a deficient number, since it is larger than the sum of its proper divisors (379259196).

505440004 is a wasteful number, since it uses less digits than its factorization.

505440004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25602 (or 25600 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 505440004 is about 22481.9928831943. The cubic root of 505440004 is about 796.5686386584.

Adding to 505440004 its reverse (400044505), we get a palindrome (905484509).

The spelling of 505440004 in words is "five hundred five million, four hundred forty thousand, four".