40428326089 has 2 divisors, whose sum is σ = 40428326090. Its totient is φ = 40428326088.

The previous prime is 40428326041. The next prime is 40428326129. The reversal of 40428326089 is 98062382404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29338551225 + 11089774864 = 171285^2 + 105308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40428326089 is a prime.

It is not a weakly prime, because it can be changed into another prime (40428326789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20214163044 + 20214163045.

It is an arithmetic number, because the mean of its divisors is an integer number (20214163045).

Almost surely, 2^40428326089 is an apocalyptic number.

It is an amenable number.

40428326089 is a deficient number, since it is larger than the sum of its proper divisors (1).

40428326089 is an equidigital number, since it uses as much as digits as its factorization.

40428326089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 40428326089 in words is "forty billion, four hundred twenty-eight million, three hundred twenty-six thousand, eighty-nine".