8963393861 has 2 divisors, whose sum is σ = 8963393862. Its totient is φ = 8963393860.

The previous prime is 8963393821. The next prime is 8963393897. The reversal of 8963393861 is 1683933698.

8963393861 is digitally balanced in base 3, 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., 5539973761 + 3423420100 = 74431^2 + 58510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8963393861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8963393797 and 8963393806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8963393821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4481696930 + 4481696931.

It is an arithmetic number, because the mean of its divisors is an integer number (4481696931).

Almost surely, 2^8963393861 is an apocalyptic number.

It is an amenable number.

8963393861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8963393861 is an equidigital number, since it uses as much as digits as its factorization.

8963393861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 56.

The square root of 8963393861 is about 94675.2019327131. The cubic root of 8963393861 is about 2077.2598487563.

The spelling of 8963393861 in words is "eight billion, nine hundred sixty-three million, three hundred ninety-three thousand, eight hundred sixty-one".