400440404043 has 24 divisors (see below), whose sum is σ = 593194610736. Its totient is φ = 260153203200.

The previous prime is 400440403973. The next prime is 400440404053. The reversal of 400440404043 is 340404044004.

400440404043 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 400440404043 - 2¹⁷ = 400440272971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400440403998 and 400440404016.

It is not an unprimeable number, because it can be changed into a prime (400440404053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290805 + ... + 940982.

It is an arithmetic number, because the mean of its divisors is an integer number (24716442114).

Almost surely, 2^400440404043 is an apocalyptic number.

400440404043 is a deficient number, since it is larger than the sum of its proper divisors (192754206693).

400440404043 is a wasteful number, since it uses less digits than its factorization.

400440404043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232715 (or 1232712 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 400440404043 its reverse (340404044004), we get a palindrome (740844448047).

The spelling of 400440404043 in words is "four hundred billion, four hundred forty million, four hundred four thousand, forty-three".