404420440 has 16 divisors (see below), whose sum is σ = 909946080. Its totient is φ = 161768160.

The previous prime is 404420381. The next prime is 404420503. The reversal of 404420440 is 44024404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5055216 + ... + 5055295.

It is an arithmetic number, because the mean of its divisors is an integer number (56871630).

Almost surely, 2^404420440 is an apocalyptic number.

404420440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404420440 is an abundant number, since it is smaller than the sum of its proper divisors (505525640).

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

404420440 is a wasteful number, since it uses less digits than its factorization.

404420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110522 (or 10110518 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 404420440 is about 20110.2073584536. The cubic root of 404420440 is about 739.5105358293.

Adding to 404420440 its reverse (44024404), we get a palindrome (448444844).

The spelling of 404420440 in words is "four hundred four million, four hundred twenty thousand, four hundred forty".