40789242017 has 2 divisors, whose sum is σ = 40789242018. Its totient is φ = 40789242016.

The previous prime is 40789241881. The next prime is 40789242037. The reversal of 40789242017 is 71024298704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40095657121 + 693584896 = 200239^2 + 26336^2 .

It is a cyclic number.

It is not a de Polignac number, because 40789242017 - 2¹⁸ = 40788979873 is a prime.

It is not a weakly prime, because it can be changed into another prime (40789242037) 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, 20394621008 + 20394621009.

It is an arithmetic number, because the mean of its divisors is an integer number (20394621009).

Almost surely, 2^40789242017 is an apocalyptic number.

It is an amenable number.

40789242017 is a deficient number, since it is larger than the sum of its proper divisors (1).

40789242017 is an equidigital number, since it uses as much as digits as its factorization.

40789242017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 40789242017 in words is "forty billion, seven hundred eighty-nine million, two hundred forty-two thousand, seventeen".