40006166 has 16 divisors (see below), whose sum is σ = 60985008. Its totient is φ = 19680000.

The previous prime is 40006163. The next prime is 40006193. The reversal of 40006166 is 66160004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40006163) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 66266 + ... + 66866.

It is an arithmetic number, because the mean of its divisors is an integer number (3811563).

Almost surely, 2^40006166 is an apocalyptic number.

40006166 is a deficient number, since it is larger than the sum of its proper divisors (20978842).

40006166 is a wasteful number, since it uses less digits than its factorization.

40006166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40006166 is about 6325.0427666538. The cubic root of 40006166 is about 342.0127612853.

The spelling of 40006166 in words is "forty million, six thousand, one hundred sixty-six".