400404443104 has 48 divisors (see below), whose sum is σ = 801626973840. Its totient is φ = 196819983360.

The previous prime is 400404443059. The next prime is 400404443149. The reversal of 400404443104 is 401344404004.

It is an interprime number because it is at equal distance from previous prime (400404443059) and next prime (400404443149).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3858652 + ... + 3961060.

It is an arithmetic number, because the mean of its divisors is an integer number (16700561955).

Almost surely, 2^400404443104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400404443104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400813486920).

400404443104 is an abundant number, since it is smaller than the sum of its proper divisors (401222530736).

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

400404443104 is a wasteful number, since it uses less digits than its factorization.

400404443104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104483 (or 104475 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 400404443104 its reverse (401344404004), we get a palindrome (801748847108).

The spelling of 400404443104 in words is "four hundred billion, four hundred four million, four hundred forty-three thousand, one hundred four".