40053643 has 16 divisors (see below), whose sum is σ = 47646720. Its totient is φ = 32947200.

The previous prime is 40053623. The next prime is 40053659. The reversal of 40053643 is 34635004.

40053643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40053643 - 2⁹ = 40053131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40053613) 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 15 ways as a sum of consecutive naturals, for example, 27723 + ... + 29131.

It is an arithmetic number, because the mean of its divisors is an integer number (2977920).

Almost surely, 2^40053643 is an apocalyptic number.

40053643 is a deficient number, since it is larger than the sum of its proper divisors (7593077).

40053643 is a wasteful number, since it uses less digits than its factorization.

40053643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 40053643 is about 6328.7947509775. The cubic root of 40053643 is about 342.1480014444.

Adding to 40053643 its reverse (34635004), we get a palindrome (74688647).

The spelling of 40053643 in words is "forty million, fifty-three thousand, six hundred forty-three".