404023224040 has 32 divisors (see below), whose sum is σ = 909113625000. Its totient is φ = 161598379264.

The previous prime is 404023223987. The next prime is 404023224053. The reversal of 404023224040 is 40422320404.

It can be written as a sum of positive squares in 4 ways, for example, as 377617624036 + 26405600004 = 614506^2 + 162498^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404023223996 and 404023224014.

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, 272586 + ... + 939334.

Almost surely, 2^404023224040 is an apocalyptic number.

404023224040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404023224040 is an abundant number, since it is smaller than the sum of its proper divisors (505090400960).

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

404023224040 is a wasteful number, since it uses less digits than its factorization.

404023224040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681909 (or 681905 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 404023224040 its reverse (40422320404), we get a palindrome (444445544444).

The spelling of 404023224040 in words is "four hundred four billion, twenty-three million, two hundred twenty-four thousand, forty".