40889307593 has 2 divisors, whose sum is σ = 40889307594. Its totient is φ = 40889307592.

The previous prime is 40889307587. The next prime is 40889307601. The reversal of 40889307593 is 39570398804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40319435209 + 569872384 = 200797^2 + 23872^2 .

It is a cyclic number.

It is not a de Polignac number, because 40889307593 - 2²² = 40885113289 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 (40889307553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20444653796 + 20444653797.

It is an arithmetic number, because the mean of its divisors is an integer number (20444653797).

Almost surely, 2^40889307593 is an apocalyptic number.

It is an amenable number.

40889307593 is a deficient number, since it is larger than the sum of its proper divisors (1).

40889307593 is an equidigital number, since it uses as much as digits as its factorization.

40889307593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 40889307593 in words is "forty billion, eight hundred eighty-nine million, three hundred seven thousand, five hundred ninety-three".