400042444244 has 12 divisors (see below), whose sum is σ = 705110784000. Its totient is φ = 198582220248.

The previous prime is 400042444229. The next prime is 400042444271. The reversal of 400042444244 is 442444240004.

It is a self number, because there is not a number n which added to its sum of digits gives 400042444244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359749844 + ... + 359750955.

It is an arithmetic number, because the mean of its divisors is an integer number (58759232000).

Almost surely, 2^400042444244 is an apocalyptic number.

It is an amenable number.

400042444244 is a deficient number, since it is larger than the sum of its proper divisors (305068339756).

400042444244 is a wasteful number, since it uses less digits than its factorization.

400042444244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719500942 (or 719500940 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 400042444244 its reverse (442444240004), we get a palindrome (842486684248).

The spelling of 400042444244 in words is "four hundred billion, forty-two million, four hundred forty-four thousand, two hundred forty-four".