400304404 has 6 divisors (see below), whose sum is σ = 700532714. Its totient is φ = 200152200.

The previous prime is 400304393. The next prime is 400304413. The reversal of 400304404 is 404403004.

It can be written as a sum of positive squares in only one way, i.e., 399920004 + 384400 = 19998^2 + 620^2 .

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, 50038047 + ... + 50038054.

Almost surely, 2^400304404 is an apocalyptic number.

It is an amenable number.

400304404 is a deficient number, since it is larger than the sum of its proper divisors (300228310).

400304404 is a wasteful number, since it uses less digits than its factorization.

400304404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100076105 (or 100076103 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 400304404 is about 20007.6086527101. The cubic root of 400304404 is about 736.9931579898.

Adding to 400304404 its reverse (404403004), we get a palindrome (804707408).

The spelling of 400304404 in words is "four hundred million, three hundred four thousand, four hundred four".