40686808 has 16 divisors (see below), whose sum is σ = 76846680. Its totient is φ = 20194368.

The previous prime is 40686773. The next prime is 40686823. The reversal of 40686808 is 80868604.

It is a happy number.

40686808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17466 + ... + 19657.

Almost surely, 2^40686808 is an apocalyptic number.

It is an amenable number.

40686808 is a deficient number, since it is larger than the sum of its proper divisors (36159872).

40686808 is a wasteful number, since it uses less digits than its factorization.

40686808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37266 (or 37262 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 40686808 is about 6378.6211676192. The cubic root of 40686808 is about 343.9414674162.

The spelling of 40686808 in words is "forty million, six hundred eighty-six thousand, eight hundred eight".