40385946 has 8 divisors (see below), whose sum is σ = 80771904. Its totient is φ = 13461980.

The previous prime is 40385941. The next prime is 40385957. The reversal of 40385946 is 64958304.

40385946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

40385946 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40385941) 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, 3365490 + ... + 3365501.

It is an arithmetic number, because the mean of its divisors is an integer number (10096488).

Almost surely, 2^40385946 is an apocalyptic number.

40385946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40385946 is a wasteful number, since it uses less digits than its factorization.

40385946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6730996.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 40385946 is about 6354.9937844187. The cubic root of 40385946 is about 343.0916011898.

The spelling of 40385946 in words is "forty million, three hundred eighty-five thousand, nine hundred forty-six".