9897806041 has 2 divisors, whose sum is σ = 9897806042. Its totient is φ = 9897806040.

The previous prime is 9897806033. The next prime is 9897806057. The reversal of 9897806041 is 1406087989.

It is a happy number.

9897806041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9385734400 + 512071641 = 96880^2 + 22629^2 .

It is a cyclic number.

It is not a de Polignac number, because 9897806041 - 2³ = 9897806033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9897806041.

It is not a weakly prime, because it can be changed into another prime (9897806641) 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, 4948903020 + 4948903021.

It is an arithmetic number, because the mean of its divisors is an integer number (4948903021).

Almost surely, 2^9897806041 is an apocalyptic number.

It is an amenable number.

9897806041 is a deficient number, since it is larger than the sum of its proper divisors (1).

9897806041 is an equidigital number, since it uses as much as digits as its factorization.

9897806041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 9897806041 is about 99487.7180409723. The cubic root of 9897806041 is about 2147.0705400357.

The spelling of 9897806041 in words is "nine billion, eight hundred ninety-seven million, eight hundred six thousand, forty-one".