404023311033440 has 144 divisors (see below), whose sum is σ = 1110455950750272. Its totient is φ = 138508141234176.

The previous prime is 404023311033371. The next prime is 404023311033499. The reversal of 404023311033440 is 44330113320404.

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

It is a junction number, because it is equal to n+sod(n) for n = 404023311033397 and 404023311033406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74340569 + ... + 79589991.

It is an arithmetic number, because the mean of its divisors is an integer number (7711499657988).

Almost surely, 2^{404023311033440} is an apocalyptic number.

404023311033440 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 404023311033440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555227975375136).

404023311033440 is an abundant number, since it is smaller than the sum of its proper divisors (706432639716832).

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

404023311033440 is a wasteful number, since it uses less digits than its factorization.

404023311033440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259269 (or 5259254 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 404023311033440 its reverse (44330113320404), we get a palindrome (448353424353844).

The spelling of 404023311033440 in words is "four hundred four trillion, twenty-three billion, three hundred eleven million, thirty-three thousand, four hundred forty".