400441443744 has 48 divisors (see below), whose sum is σ = 1058721118560. Its totient is φ = 132520185600.

The previous prime is 400441443739. The next prime is 400441443749. The reversal of 400441443744 is 447344144004.

It is an interprime number because it is at equal distance from previous prime (400441443739) and next prime (400441443749).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (400441443749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14991207 + ... + 15017894.

It is an arithmetic number, because the mean of its divisors is an integer number (22056689970).

Almost surely, 2^400441443744 is an apocalyptic number.

It is an amenable number.

400441443744 is an abundant number, since it is smaller than the sum of its proper divisors (658279674816).

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

400441443744 is a wasteful number, since it uses less digits than its factorization.

400441443744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30009253 (or 30009245 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 39.

Adding to 400441443744 its reverse (447344144004), we get a palindrome (847785587748).

It can be divided in two parts, 400 and 441443744, that added together give a palindrome (441444144).

The spelling of 400441443744 in words is "four hundred billion, four hundred forty-one million, four hundred forty-three thousand, seven hundred forty-four".