40805408 has 24 divisors (see below), whose sum is σ = 91812672. Its totient is φ = 17487936.

The previous prime is 40805383. The next prime is 40805437. The reversal of 40805408 is 80450804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90860 + ... + 91307.

It is an arithmetic number, because the mean of its divisors is an integer number (3825528).

Almost surely, 2^40805408 is an apocalyptic number.

It is an amenable number.

40805408 is an abundant number, since it is smaller than the sum of its proper divisors (51007264).

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

40805408 is a wasteful number, since it uses less digits than its factorization.

40805408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182184 (or 182176 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 40805408 is about 6387.9110826623. The cubic root of 40805408 is about 344.2753339206.

The spelling of 40805408 in words is "forty million, eight hundred five thousand, four hundred eight".