405005224772 has 12 divisors (see below), whose sum is σ = 727914796140. Its totient is φ = 197029568736.

The previous prime is 405005224717. The next prime is 405005224807. The reversal of 405005224772 is 277422500504.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 379929235456 + 25075989316 = 616384^2 + 158354^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368260747 + ... + 1368261042.

It is an arithmetic number, because the mean of its divisors is an integer number (60659566345).

Almost surely, 2^405005224772 is an apocalyptic number.

It is an amenable number.

405005224772 is a deficient number, since it is larger than the sum of its proper divisors (322909571368).

405005224772 is a wasteful number, since it uses less digits than its factorization.

405005224772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736521830 (or 2736521828 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 38.

The spelling of 405005224772 in words is "four hundred five billion, five million, two hundred twenty-four thousand, seven hundred seventy-two".