400804444480 has 56 divisors (see below), whose sum is σ = 1041180645600. Its totient is φ = 145747069440.

The previous prime is 400804444463. The next prime is 400804444483. The reversal of 400804444480 is 84444408004.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400804444483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56928930 + ... + 56935969.

Almost surely, 2^400804444480 is an apocalyptic number.

400804444480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400804444480 is an abundant number, since it is smaller than the sum of its proper divisors (640376201120).

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

400804444480 is a wasteful number, since it uses less digits than its factorization.

400804444480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113864927 (or 113864917 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 40.

The spelling of 400804444480 in words is "four hundred billion, eight hundred four million, four hundred forty-four thousand, four hundred eighty".