400440200002 has 4 divisors (see below), whose sum is σ = 600660300006. Its totient is φ = 200220100000.

The previous prime is 400440199997. The next prime is 400440200021. The reversal of 400440200002 is 200002044004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 351081135441 + 49359064561 = 592521^2 + 222169^2 .

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, 100110049999 + ... + 100110050002.

Almost surely, 2^400440200002 is an apocalyptic number.

400440200002 is a deficient number, since it is larger than the sum of its proper divisors (200220100004).

400440200002 is a wasteful number, since it uses less digits than its factorization.

400440200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200220100003.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 400440200002 its reverse (200002044004), we get a palindrome (600442244006).

The spelling of 400440200002 in words is "four hundred billion, four hundred forty million, two hundred thousand, two".