9400860542209 has 2 divisors, whose sum is σ = 9400860542210. Its totient is φ = 9400860542208.

The previous prime is 9400860542179. The next prime is 9400860542221. The reversal of 9400860542209 is 9022450680049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8627466935025 + 773393607184 = 2937255^2 + 879428^2 .

It is a cyclic number.

It is not a de Polignac number, because 9400860542209 - 2⁹ = 9400860541697 is a prime.

It is not a weakly prime, because it can be changed into another prime (9400860542009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4700430271104 + 4700430271105.

It is an arithmetic number, because the mean of its divisors is an integer number (4700430271105).

Almost surely, 2^{9400860542209} is an apocalyptic number.

It is an amenable number.

9400860542209 is a deficient number, since it is larger than the sum of its proper divisors (1).

9400860542209 is an equidigital number, since it uses as much as digits as its factorization.

9400860542209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 9400860542209 in words is "nine trillion, four hundred billion, eight hundred sixty million, five hundred forty-two thousand, two hundred nine".