404220000440 has 32 divisors (see below), whose sum is σ = 921953843280. Its totient is φ = 159473094912.

The previous prime is 404220000419. The next prime is 404220000497. The reversal of 404220000440 is 44000022404.

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

It is a congruent number.

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, 69212834 + ... + 69218673.

Almost surely, 2^404220000440 is an apocalyptic number.

404220000440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404220000440 is an abundant number, since it is smaller than the sum of its proper divisors (517733842840).

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

404220000440 is a wasteful number, since it uses less digits than its factorization.

404220000440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138431591 (or 138431587 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 404220000440 its reverse (44000022404), we get a palindrome (448220022844).

The spelling of 404220000440 in words is "four hundred four billion, two hundred twenty million, four hundred forty", and thus it is an aban number.