404343221440 has 56 divisors (see below), whose sum is σ = 964050987312. Its totient is φ = 161534254080.

The previous prime is 404343221383. The next prime is 404343221453. The reversal of 404343221440 is 44122343404.

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, 537666 + ... + 1047745.

It is an arithmetic number, because the mean of its divisors is an integer number (17215196202).

Almost surely, 2^404343221440 is an apocalyptic number.

404343221440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404343221440 is an abundant number, since it is smaller than the sum of its proper divisors (559707765872).

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

404343221440 is a wasteful number, since it uses less digits than its factorization.

404343221440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586225 (or 1586215 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 404343221440 its reverse (44122343404), we get a palindrome (448465564844).

The spelling of 404343221440 in words is "four hundred four billion, three hundred forty-three million, two hundred twenty-one thousand, four hundred forty".