40366161 has 16 divisors (see below), whose sum is σ = 65238720. Its totient is φ = 24464160.

The previous prime is 40366159. The next prime is 40366169. The reversal of 40366161 is 16166304.

40366161 is a `hidden beast` number, since 40 + 3 + 6 + 616 + 1 = 666.

40366161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40366161 - 2¹ = 40366159 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40366169) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 67660 + ... + 68253.

It is an arithmetic number, because the mean of its divisors is an integer number (4077420).

Almost surely, 2^40366161 is an apocalyptic number.

It is an amenable number.

40366161 is a deficient number, since it is larger than the sum of its proper divisors (24872559).

40366161 is a wasteful number, since it uses less digits than its factorization.

40366161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135933 (or 135927 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40366161 is about 6353.4369438911. The cubic root of 40366161 is about 343.0355653919.

It can be divided in two parts, 403 and 66161, that added together give a square (66564 = 258²).

The spelling of 40366161 in words is "forty million, three hundred sixty-six thousand, one hundred sixty-one".