404008812 has 36 divisors (see below), whose sum is σ = 1022655816. Its totient is φ = 134483520.

The previous prime is 404008807. The next prime is 404008817. The reversal of 404008812 is 218800404.

It is an interprime number because it is at equal distance from previous prime (404008807) and next prime (404008817).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (404008817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20023 + ... + 34769.

It is an arithmetic number, because the mean of its divisors is an integer number (28407106).

Almost surely, 2^404008812 is an apocalyptic number.

It is an amenable number.

404008812 is an abundant number, since it is smaller than the sum of its proper divisors (618647004).

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

404008812 is a wasteful number, since it uses less digits than its factorization.

404008812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15518 (or 15513 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 404008812 is about 20099.9704477395. The cubic root of 404008812 is about 739.2595539737.

It can be divided in two parts, 4040088 and 12, that added together give a square (4040100 = 2010²).

The spelling of 404008812 in words is "four hundred four million, eight thousand, eight hundred twelve".