40539438 has 24 divisors (see below), whose sum is σ = 89075376. Its totient is φ = 13322400.

The previous prime is 40539397. The next prime is 40539439. The reversal of 40539438 is 83493504.

40539438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40539439) 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 11 ways as a sum of consecutive naturals, for example, 14583 + ... + 17138.

It is an arithmetic number, because the mean of its divisors is an integer number (3711474).

Almost surely, 2^40539438 is an apocalyptic number.

40539438 is an abundant number, since it is smaller than the sum of its proper divisors (48535938).

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

40539438 is a wasteful number, since it uses less digits than its factorization.

40539438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31800 (or 31797 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 40539438 is about 6367.0588186383. The cubic root of 40539438 is about 343.5257063324.

The spelling of 40539438 in words is "forty million, five hundred thirty-nine thousand, four hundred thirty-eight".