408404884840 has 32 divisors (see below), whose sum is σ = 920445120000. Its totient is φ = 163089219904.

The previous prime is 408404884787. The next prime is 408404884861. The reversal of 408404884840 is 48488404804.

It is a super-2 number, since 2×408404884840² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8498680 + ... + 8546599.

It is an arithmetic number, because the mean of its divisors is an integer number (28763910000).

Almost surely, 2^408404884840 is an apocalyptic number.

408404884840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

408404884840 is an abundant number, since it is smaller than the sum of its proper divisors (512040235160).

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

408404884840 is a wasteful number, since it uses less digits than its factorization.

408404884840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17045889 (or 17045885 counting only the distinct ones).

The product of its (nonzero) digits is 4194304, while the sum is 52.

The spelling of 408404884840 in words is "four hundred eight billion, four hundred four million, eight hundred eighty-four thousand, eight hundred forty".