400844440484 has 24 divisors (see below), whose sum is σ = 702834330240. Its totient is φ = 200034746144.

The previous prime is 400844440483. The next prime is 400844440487. The reversal of 400844440484 is 484044448004.

It is not an unprimeable number, because it can be changed into a prime (400844440483) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21932102 + ... + 21950370.

It is an arithmetic number, because the mean of its divisors is an integer number (29284763760).

Almost surely, 2^400844440484 is an apocalyptic number.

It is an amenable number.

400844440484 is a deficient number, since it is larger than the sum of its proper divisors (301989889756).

400844440484 is a wasteful number, since it uses less digits than its factorization.

400844440484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28579 (or 28577 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 44.

Adding to 400844440484 its reverse (484044448004), we get a palindrome (884888888488).

The spelling of 400844440484 in words is "four hundred billion, eight hundred forty-four million, four hundred forty thousand, four hundred eighty-four".