404039391408 has 80 divisors (see below), whose sum is σ = 1227962878560. Its totient is φ = 126757453824.

The previous prime is 404039391407. The next prime is 404039391419. The reversal of 404039391408 is 804193930404.

It is a happy number.

404039391408 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (404039391401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27500785 + ... + 27515472.

It is an arithmetic number, because the mean of its divisors is an integer number (15349535982).

Almost surely, 2^404039391408 is an apocalyptic number.

404039391408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

404039391408 is an abundant number, since it is smaller than the sum of its proper divisors (823923487152).

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

404039391408 is a wasteful number, since it uses less digits than its factorization.

404039391408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55016291 (or 55016279 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 404039391408 in words is "four hundred four billion, thirty-nine million, three hundred ninety-one thousand, four hundred eight".