40385071 has 2 divisors, whose sum is σ = 40385072. Its totient is φ = 40385070.

The previous prime is 40385063. The next prime is 40385113. The reversal of 40385071 is 17058304.

40385071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40385071 - 2³ = 40385063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40385011) 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 as a sum of consecutive naturals, namely, 20192535 + 20192536.

It is an arithmetic number, because the mean of its divisors is an integer number (20192536).

Almost surely, 2^40385071 is an apocalyptic number.

40385071 is a deficient number, since it is larger than the sum of its proper divisors (1).

40385071 is an equidigital number, since it uses as much as digits as its factorization.

40385071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 40385071 is about 6354.9249405481. The cubic root of 40385071 is about 343.0891233697.

The spelling of 40385071 in words is "forty million, three hundred eighty-five thousand, seventy-one".