400040444404 has 6 divisors (see below), whose sum is σ = 700070777714. Its totient is φ = 200020222200.

The previous prime is 400040444383. The next prime is 400040444429. The reversal of 400040444404 is 404444040004.

It can be written as a sum of positive squares in only one way, i.e., 300525432804 + 99515011600 = 548202^2 + 315460^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005055547 + ... + 50005055554.

Almost surely, 2^400040444404 is an apocalyptic number.

It is an amenable number.

400040444404 is a deficient number, since it is larger than the sum of its proper divisors (300030333310).

400040444404 is a wasteful number, since it uses less digits than its factorization.

400040444404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100010111105 (or 100010111103 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 400040444404 its reverse (404444040004), we get a palindrome (804484484408).

The spelling of 400040444404 in words is "four hundred billion, forty million, four hundred forty-four thousand, four hundred four".