405424004 has 6 divisors (see below), whose sum is σ = 709492014. Its totient is φ = 202712000.

The previous prime is 405424001. The next prime is 405424009. The reversal of 405424004 is 400424504.

It can be written as a sum of positive squares in only one way, i.e., 232501504 + 172922500 = 15248^2 + 13150^2 .

It is not an unprimeable number, because it can be changed into a prime (405424001) 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 as a sum of consecutive naturals, namely, 50677997 + ... + 50678004.

It is an arithmetic number, because the mean of its divisors is an integer number (118248669).

Almost surely, 2^405424004 is an apocalyptic number.

It is an amenable number.

405424004 is a deficient number, since it is larger than the sum of its proper divisors (304068010).

405424004 is a wasteful number, since it uses less digits than its factorization.

405424004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101356005 (or 101356003 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 405424004 is about 20135.1435058209. The cubic root of 405424004 is about 740.1217257756.

Adding to 405424004 its reverse (400424504), we get a palindrome (805848508).

The spelling of 405424004 in words is "four hundred five million, four hundred twenty-four thousand, four".