408000000040 has 32 divisors (see below), whose sum is σ = 918096975360. Its totient is φ = 163182760000.

The previous prime is 408000000029. The next prime is 408000000059. The reversal of 408000000040 is 40000000804.

It is a junction number, because it is equal to n+sod(n) for n = 407999999960 and 408000000023.

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, 151936 + ... + 916015.

It is an arithmetic number, because the mean of its divisors is an integer number (28690530480).

Almost surely, 2^408000000040 is an apocalyptic number.

408000000040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

408000000040 is an abundant number, since it is smaller than the sum of its proper divisors (510096975320).

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

408000000040 is a wasteful number, since it uses less digits than its factorization.

408000000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077513 (or 1077509 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 408000000040 its reverse (40000000804), we get a palindrome (448000000844).

The spelling of 408000000040 in words is "four hundred eight billion, forty", and thus it is an aban number.