400048844 has 36 divisors (see below), whose sum is σ = 788197536. Its totient is φ = 176598048.

The previous prime is 400048837. The next prime is 400048853. The reversal of 400048844 is 448840004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 400048844.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20237 + ... + 34779.

It is an arithmetic number, because the mean of its divisors is an integer number (21894376).

Almost surely, 2^400048844 is an apocalyptic number.

It is an amenable number.

400048844 is a deficient number, since it is larger than the sum of its proper divisors (388148692).

400048844 is a wasteful number, since it uses less digits than its factorization.

400048844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14606 (or 14581 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 400048844 is about 20001.2210627251. The cubic root of 400048844 is about 736.8362889799.

Adding to 400048844 its reverse (448840004), we get a palindrome (848888848).

The spelling of 400048844 in words is "four hundred million, forty-eight thousand, eight hundred forty-four".