404000130440 has 64 divisors (see below), whose sum is σ = 957576859200. Its totient is φ = 152977275648.

The previous prime is 404000130427. The next prime is 404000130461. The reversal of 404000130440 is 44031000404.

It is a super-2 number, since 2×404000130440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 789962 + ... + 1196678.

It is an arithmetic number, because the mean of its divisors is an integer number (14962138425).

Almost surely, 2^404000130440 is an apocalyptic number.

404000130440 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 404000130440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478788429600).

404000130440 is an abundant number, since it is smaller than the sum of its proper divisors (553576728760).

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

404000130440 is a wasteful number, since it uses less digits than its factorization.

404000130440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408054 (or 408050 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 404000130440 its reverse (44031000404), we get a palindrome (448031130844).

The spelling of 404000130440 in words is "four hundred four billion, one hundred thirty thousand, four hundred forty".