404920048840 has 32 divisors (see below), whose sum is σ = 915694849080. Its totient is φ = 161145843712.

The previous prime is 404920048831. The next prime is 404920048843. The reversal of 404920048840 is 48840029404.

It can be written as a sum of positive squares in 4 ways, for example, as 307672121124 + 97247927716 = 554682^2 + 311846^2 .

It is not an unprimeable number, because it can be changed into a prime (404920048843) 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, 25685017 + ... + 25700776.

Almost surely, 2^404920048840 is an apocalyptic number.

404920048840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404920048840 is an abundant number, since it is smaller than the sum of its proper divisors (510774800240).

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

404920048840 is a wasteful number, since it uses less digits than its factorization.

404920048840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51386001 (or 51385997 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 404920048840 in words is "four hundred four billion, nine hundred twenty million, forty-eight thousand, eight hundred forty".