40009168 has 20 divisors (see below), whose sum is σ = 78790468. Its totient is φ = 19676160.

The previous prime is 40009159. The next prime is 40009169. The reversal of 40009168 is 86190004.

40009168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3139984 + 36869184 = 1772^2 + 6072^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40009169) 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 3 ways as a sum of consecutive naturals, for example, 19521 + ... + 21472.

Almost surely, 2^40009168 is an apocalyptic number.

It is an amenable number.

40009168 is a deficient number, since it is larger than the sum of its proper divisors (38781300).

40009168 is a wasteful number, since it uses less digits than its factorization.

40009168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41062 (or 41056 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 40009168 is about 6325.2800728505. The cubic root of 40009168 is about 342.0213157718.

The spelling of 40009168 in words is "forty million, nine thousand, one hundred sixty-eight".