404312421440 has 112 divisors (see below), whose sum is σ = 967803154560. Its totient is φ = 160881315840.

The previous prime is 404312421439. The next prime is 404312421511. The reversal of 404312421440 is 44124213404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59253869 + ... + 59260691.

Almost surely, 2^404312421440 is an apocalyptic number.

404312421440 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 404312421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483901577280).

404312421440 is an abundant number, since it is smaller than the sum of its proper divisors (563490733120).

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

404312421440 is a wasteful number, since it uses less digits than its factorization.

404312421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780 (or 7770 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 404312421440 its reverse (44124213404), we get a palindrome (448436634844).

The spelling of 404312421440 in words is "four hundred four billion, three hundred twelve million, four hundred twenty-one thousand, four hundred forty".