400200404 has 6 divisors (see below), whose sum is σ = 700350714. Its totient is φ = 200100200.

The previous prime is 400200397. The next prime is 400200413. The reversal of 400200404 is 404002004.

It can be written as a sum of positive squares in only one way, i.e., 246490000 + 153710404 = 15700^2 + 12398^2 .

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, 50025047 + ... + 50025054.

It is an arithmetic number, because the mean of its divisors is an integer number (116725119).

Almost surely, 2^400200404 is an apocalyptic number.

It is an amenable number.

400200404 is a deficient number, since it is larger than the sum of its proper divisors (300150310).

400200404 is a wasteful number, since it uses less digits than its factorization.

400200404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100050105 (or 100050103 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 400200404 is about 20005.0094726296. The cubic root of 400200404 is about 736.9293282923.

Adding to 400200404 its reverse (404002004), we get a palindrome (804202408).

The spelling of 400200404 in words is "four hundred million, two hundred thousand, four hundred four".