400200244443 has 12 divisors (see below), whose sum is σ = 578913393240. Its totient is φ = 266409529056.

The previous prime is 400200244391. The next prime is 400200244481. The reversal of 400200244443 is 344442002004.

It is a happy number.

It is not a de Polignac number, because 400200244443 - 2²⁶ = 400133135579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400200244043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32546338 + ... + 32558631.

It is an arithmetic number, because the mean of its divisors is an integer number (48242782770).

Almost surely, 2^400200244443 is an apocalyptic number.

400200244443 is a deficient number, since it is larger than the sum of its proper divisors (178713148797).

400200244443 is a wasteful number, since it uses less digits than its factorization.

400200244443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65105658 (or 65105655 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 400200244443 its reverse (344442002004), we get a palindrome (744642246447).

The spelling of 400200244443 in words is "four hundred billion, two hundred million, two hundred forty-four thousand, four hundred forty-three".