400444200404 has 6 divisors (see below), whose sum is σ = 700777350714. Its totient is φ = 200222100200.

The previous prime is 400444200379. The next prime is 400444200433. The reversal of 400444200404 is 404002444004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 206932190404 + 193512010000 = 454898^2 + 439900^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055525047 + ... + 50055525054.

It is an arithmetic number, because the mean of its divisors is an integer number (116796225119).

Almost surely, 2^400444200404 is an apocalyptic number.

It is an amenable number.

400444200404 is a deficient number, since it is larger than the sum of its proper divisors (300333150310).

400444200404 is a wasteful number, since it uses less digits than its factorization.

400444200404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100111050105 (or 100111050103 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 400444200404 its reverse (404002444004), we get a palindrome (804446644408).

The spelling of 400444200404 in words is "four hundred billion, four hundred forty-four million, two hundred thousand, four hundred four".