40006808 has 8 divisors (see below), whose sum is σ = 75012780. Its totient is φ = 20003400.

The previous prime is 40006793. The next prime is 40006819. The reversal of 40006808 is 80860004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500418 + ... + 2500433.

Almost surely, 2^40006808 is an apocalyptic number.

It is an amenable number.

40006808 is a deficient number, since it is larger than the sum of its proper divisors (35005972).

40006808 is a wasteful number, since it uses less digits than its factorization.

40006808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000857 (or 5000853 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 40006808 is about 6325.0935170952. The cubic root of 40006808 is about 342.0145907617.

The spelling of 40006808 in words is "forty million, six thousand, eight hundred eight".