400204202404 has 12 divisors (see below), whose sum is σ = 709951291084. Its totient is φ = 197360976384.

The previous prime is 400204202401. The next prime is 400204202413. The reversal of 400204202404 is 404202402004.

It can be written as a sum of positive squares in 2 ways, for example, as 289347168100 + 110857034304 = 537910^2 + 332952^2 .

It is not an unprimeable number, because it can be changed into a prime (400204202401) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 685280877 + ... + 685281460.

Almost surely, 2^400204202404 is an apocalyptic number.

It is an amenable number.

400204202404 is a deficient number, since it is larger than the sum of its proper divisors (309747088680).

400204202404 is a wasteful number, since it uses less digits than its factorization.

400204202404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370562414 (or 1370562412 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 400204202404 its reverse (404202402004), we get a palindrome (804406604408).

It can be divided in two parts, 40020 and 4202404, that added together give a palindrome (4242424).

The spelling of 400204202404 in words is "four hundred billion, two hundred four million, two hundred two thousand, four hundred four".