40205089 has 2 divisors, whose sum is σ = 40205090. Its totient is φ = 40205088.

The previous prime is 40205063. The next prime is 40205093. The reversal of 40205089 is 98050204.

It is a happy number.

40205089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22014864 + 18190225 = 4692^2 + 4265^2 .

It is a cyclic number.

It is not a de Polignac number, because 40205089 - 2¹¹ = 40203041 is a prime.

It is not a weakly prime, because it can be changed into another prime (40205029) 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, 20102544 + 20102545.

It is an arithmetic number, because the mean of its divisors is an integer number (20102545).

Almost surely, 2^40205089 is an apocalyptic number.

It is an amenable number.

40205089 is a deficient number, since it is larger than the sum of its proper divisors (1).

40205089 is an equidigital number, since it uses as much as digits as its factorization.

40205089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 40205089 is about 6340.7482996883. The cubic root of 40205089 is about 342.5786886528.

The spelling of 40205089 in words is "forty million, two hundred five thousand, eighty-nine".