400444443404 has 48 divisors (see below), whose sum is σ = 733500835200. Its totient is φ = 191116867200.

The previous prime is 400444443401. The next prime is 400444443457. The reversal of 400444443404 is 404344444004.

It is not an unprimeable number, because it can be changed into a prime (400444443401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1943567 + ... + 2139705.

It is an arithmetic number, because the mean of its divisors is an integer number (15281267400).

Almost surely, 2^400444443404 is an apocalyptic number.

It is an amenable number.

400444443404 is a deficient number, since it is larger than the sum of its proper divisors (333056391796).

400444443404 is a wasteful number, since it uses less digits than its factorization.

400444443404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196454 (or 196452 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 35.

Adding to 400444443404 its reverse (404344444004), we get a palindrome (804788887408).

The spelling of 400444443404 in words is "four hundred billion, four hundred forty-four million, four hundred forty-three thousand, four hundred four".