40358538 has 48 divisors (see below), whose sum is σ = 95842656. Its totient is φ = 12172320.

The previous prime is 40358531. The next prime is 40358551. The reversal of 40358538 is 83585304.

40358538 is a `hidden beast` number, since 40 + 3 + 585 + 38 = 666.

40358538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40358531) 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 23 ways as a sum of consecutive naturals, for example, 62445 + ... + 63087.

It is an arithmetic number, because the mean of its divisors is an integer number (1996722).

Almost surely, 2^40358538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40358538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47921328).

40358538 is an abundant number, since it is smaller than the sum of its proper divisors (55484118).

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

40358538 is a wasteful number, since it uses less digits than its factorization.

40358538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 40358538 is about 6352.8370040479. The cubic root of 40358538 is about 343.0139703671.

The spelling of 40358538 in words is "forty million, three hundred fifty-eight thousand, five hundred thirty-eight".