408385384 has 32 divisors (see below), whose sum is σ = 836360640. Its totient is φ = 185401600.

The previous prime is 408385343. The next prime is 408385387. The reversal of 408385384 is 483583804.

It is a self number, because there is not a number n which added to its sum of digits gives 408385384.

It is not an unprimeable number, because it can be changed into a prime (408385387) 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, 84144 + ... + 88864.

It is an arithmetic number, because the mean of its divisors is an integer number (26136270).

Almost surely, 2^408385384 is an apocalyptic number.

408385384 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

408385384 is an abundant number, since it is smaller than the sum of its proper divisors (427975256).

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

408385384 is a wasteful number, since it uses less digits than its factorization.

408385384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721 (or 5717 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 408385384 is about 20208.5473005855. The cubic root of 408385384 is about 741.9194047930.

The spelling of 408385384 in words is "four hundred eight million, three hundred eighty-five thousand, three hundred eighty-four".