400848440000 has 280 divisors, whose sum is σ = 1088787601440. Its totient is φ = 145696768000.

The previous prime is 400848439939. The next prime is 400848440039. The reversal of 400848440000 is 44848004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 19709837 + ... + 19730163.

It is an arithmetic number, because the mean of its divisors is an integer number (3888527148).

Almost surely, 2^400848440000 is an apocalyptic number.

400848440000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400848440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544393800720).

400848440000 is an abundant number, since it is smaller than the sum of its proper divisors (687939161440).

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

400848440000 is a wasteful number, since it uses less digits than its factorization.

400848440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20405 (or 20380 counting only the distinct ones).

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

The spelling of 400848440000 in words is "four hundred billion, eight hundred forty-eight million, four hundred forty thousand".