40055686 has 32 divisors (see below), whose sum is σ = 69926400. Its totient is φ = 17016480.

The previous prime is 40055671. The next prime is 40055713. The reversal of 40055686 is 68655004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32416 + ... + 33628.

It is an arithmetic number, because the mean of its divisors is an integer number (2185200).

Almost surely, 2^40055686 is an apocalyptic number.

40055686 is a deficient number, since it is larger than the sum of its proper divisors (29870714).

40055686 is a wasteful number, since it uses less digits than its factorization.

40055686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 40055686 is about 6328.9561540589. The cubic root of 40055686 is about 342.1538186138.

The spelling of 40055686 in words is "forty million, fifty-five thousand, six hundred eighty-six".