40008593 has 2 divisors, whose sum is σ = 40008594. Its totient is φ = 40008592.

The previous prime is 40008589. The next prime is 40008629. The reversal of 40008593 is 39580004.

40008593 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 can be written as a sum of positive squares in only one way, i.e., 26296384 + 13712209 = 5128^2 + 3703^2 .

It is a cyclic number.

It is not a de Polignac number, because 40008593 - 2² = 40008589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40008503) 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, 20004296 + 20004297.

It is an arithmetic number, because the mean of its divisors is an integer number (20004297).

Almost surely, 2^40008593 is an apocalyptic number.

It is an amenable number.

40008593 is a deficient number, since it is larger than the sum of its proper divisors (1).

40008593 is an equidigital number, since it uses as much as digits as its factorization.

40008593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40008593 is about 6325.2346201544. The cubic root of 40008593 is about 342.0196772874.

Adding to 40008593 its reverse (39580004), we get a palindrome (79588597).

The spelling of 40008593 in words is "forty million, eight thousand, five hundred ninety-three".