400200440444 has 48 divisors (see below), whose sum is σ = 842629777920. Its totient is φ = 162467622720.

The previous prime is 400200440413. The next prime is 400200440537. The reversal of 400200440444 is 444044002004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4814354 + ... + 4896774.

It is an arithmetic number, because the mean of its divisors is an integer number (17554787040).

Almost surely, 2^400200440444 is an apocalyptic number.

It is an amenable number.

400200440444 is an abundant number, since it is smaller than the sum of its proper divisors (442429337476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400200440444 is a wasteful number, since it uses less digits than its factorization.

400200440444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91578 (or 91576 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 400200440444 its reverse (444044002004), we get a palindrome (844244442448).

The spelling of 400200440444 in words is "four hundred billion, two hundred million, four hundred forty thousand, four hundred forty-four".