40040593 has 4 divisors (see below), whose sum is σ = 42395940. Its totient is φ = 37685248.

The previous prime is 40040563. The next prime is 40040603. The reversal of 40040593 is 39504004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28804689 + 11235904 = 5367^2 + 3352^2 .

It is a cyclic number.

It is not a de Polignac number, because 40040593 - 2¹³ = 40032401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40040513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177648 + ... + 1177681.

It is an arithmetic number, because the mean of its divisors is an integer number (10598985).

Almost surely, 2^40040593 is an apocalyptic number.

It is an amenable number.

40040593 is a deficient number, since it is larger than the sum of its proper divisors (2355347).

40040593 is a wasteful number, since it uses less digits than its factorization.

40040593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355346.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 40040593 is about 6327.7636649926. The cubic root of 40040593 is about 342.1108386456.

Adding to 40040593 its reverse (39504004), we get a palindrome (79544597).

The spelling of 40040593 in words is "forty million, forty thousand, five hundred ninety-three".