9963445873 has 2 divisors, whose sum is σ = 9963445874. Its totient is φ = 9963445872.

The previous prime is 9963445841. The next prime is 9963445897. The reversal of 9963445873 is 3785443699.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8022426624 + 1941019249 = 89568^2 + 44057^2 .

It is a cyclic number.

It is not a de Polignac number, because 9963445873 - 2⁵ = 9963445841 is a prime.

It is not a weakly prime, because it can be changed into another prime (9963445573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4981722936 + 4981722937.

It is an arithmetic number, because the mean of its divisors is an integer number (4981722937).

Almost surely, 2^9963445873 is an apocalyptic number.

It is an amenable number.

9963445873 is a deficient number, since it is larger than the sum of its proper divisors (1).

9963445873 is an equidigital number, since it uses as much as digits as its factorization.

9963445873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 58.

The square root of 9963445873 is about 99817.0620335021. The cubic root of 9963445873 is about 2151.8063689171.

The spelling of 9963445873 in words is "nine billion, nine hundred sixty-three million, four hundred forty-five thousand, eight hundred seventy-three".