9240428547809 has 2 divisors, whose sum is σ = 9240428547810. Its totient is φ = 9240428547808.

The previous prime is 9240428547733. The next prime is 9240428547817. The reversal of 9240428547809 is 9087458240429.

9240428547809 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., 8846103577600 + 394324970209 = 2974240^2 + 627953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9240428547809 is a prime.

It is not a weakly prime, because it can be changed into another prime (9240428547829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4620214273904 + 4620214273905.

It is an arithmetic number, because the mean of its divisors is an integer number (4620214273905).

Almost surely, 2^{9240428547809} is an apocalyptic number.

It is an amenable number.

9240428547809 is a deficient number, since it is larger than the sum of its proper divisors (1).

9240428547809 is an equidigital number, since it uses as much as digits as its factorization.

9240428547809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46448640, while the sum is 62.

The spelling of 9240428547809 in words is "nine trillion, two hundred forty billion, four hundred twenty-eight million, five hundred forty-seven thousand, eight hundred nine".