404323411240 has 128 divisors (see below), whose sum is σ = 1042826400000. Its totient is φ = 138207541248.

The previous prime is 404323411229. The next prime is 404323411267. The reversal of 404323411240 is 42114323404.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 404323411199 and 404323411208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238819834 + ... + 238821526.

It is an arithmetic number, because the mean of its divisors is an integer number (8147081250).

Almost surely, 2^404323411240 is an apocalyptic number.

404323411240 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 404323411240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521413200000).

404323411240 is an abundant number, since it is smaller than the sum of its proper divisors (638502988760).

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

404323411240 is a wasteful number, since it uses less digits than its factorization.

404323411240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779 (or 3775 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 404323411240 its reverse (42114323404), we get a palindrome (446437734644).

The spelling of 404323411240 in words is "four hundred four billion, three hundred twenty-three million, four hundred eleven thousand, two hundred forty".