404488448440 has 32 divisors (see below), whose sum is σ = 949668533280. Its totient is φ = 154760797312.

The previous prime is 404488448393. The next prime is 404488448443. The reversal of 404488448440 is 44844884404.

It is a super-2 number, since 2×404488448440² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404488448443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219829759 + ... + 219831598.

It is an arithmetic number, because the mean of its divisors is an integer number (29677141665).

Almost surely, 2^404488448440 is an apocalyptic number.

404488448440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404488448440 is an abundant number, since it is smaller than the sum of its proper divisors (545180084840).

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

404488448440 is a wasteful number, since it uses less digits than its factorization.

404488448440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439661391 (or 439661387 counting only the distinct ones).

The product of its (nonzero) digits is 8388608, while the sum is 52.

The spelling of 404488448440 in words is "four hundred four billion, four hundred eighty-eight million, four hundred forty-eight thousand, four hundred forty".