404244440 has 16 divisors (see below), whose sum is σ = 909550080. Its totient is φ = 161697760.

The previous prime is 404244403. The next prime is 404244457. The reversal of 404244440 is 44442404.

It is a happy number.

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, 5053016 + ... + 5053095.

It is an arithmetic number, because the mean of its divisors is an integer number (56846880).

Almost surely, 2^404244440 is an apocalyptic number.

404244440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404244440 is an abundant number, since it is smaller than the sum of its proper divisors (505305640).

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

404244440 is a wasteful number, since it uses less digits than its factorization.

404244440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106122 (or 10106118 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 404244440 is about 20105.8309950124. The cubic root of 404244440 is about 739.4032442365.

Adding to 404244440 its reverse (44442404), we get a palindrome (448686844).

The spelling of 404244440 in words is "four hundred four million, two hundred forty-four thousand, four hundred forty".