400312334044 has 12 divisors (see below), whose sum is σ = 800624668144. Its totient is φ = 171562428864.

The previous prime is 400312334039. The next prime is 400312334077. The reversal of 400312334044 is 440433213004.

400312334044 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 14296869073 = 400312334044 / (4 + 0 + 0 + 3 + 1 + 2 + 3 + 3 + 4 + 0 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7148434509 + ... + 7148434564.

Almost surely, 2^400312334044 is an apocalyptic number.

It is an amenable number.

400312334044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400312334044 is a wasteful number, since it uses less digits than its factorization.

400312334044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14296869084 (or 14296869082 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 400312334044 its reverse (440433213004), we get a palindrome (840745547048).

The spelling of 400312334044 in words is "four hundred billion, three hundred twelve million, three hundred thirty-four thousand, forty-four".