404323444040 has 32 divisors (see below), whose sum is σ = 910052556480. Its totient is φ = 161671634112.

The previous prime is 404323444039. The next prime is 404323444067. The reversal of 404323444040 is 40444323404.

It is a junction number, because it is equal to n+sod(n) for n = 404323443988 and 404323444006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690964 + ... + 1915203.

It is an arithmetic number, because the mean of its divisors is an integer number (28439142390).

Almost surely, 2^404323444040 is an apocalyptic number.

404323444040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404323444040 is an abundant number, since it is smaller than the sum of its proper divisors (505729112440).

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

404323444040 is a wasteful number, since it uses less digits than its factorization.

404323444040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608981 (or 3608977 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 404323444040 its reverse (40444323404), we get a palindrome (444767767444).

The spelling of 404323444040 in words is "four hundred four billion, three hundred twenty-three million, four hundred forty-four thousand, forty".