9866772983 has 2 divisors, whose sum is σ = 9866772984. Its totient is φ = 9866772982.

The previous prime is 9866772947. The next prime is 9866773003. The reversal of 9866772983 is 3892776689.

It is a strong prime.

It is an emirp because it is prime and its reverse (3892776689) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9866772983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9866771983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933386491 + 4933386492.

It is an arithmetic number, because the mean of its divisors is an integer number (4933386492).

Almost surely, 2^9866772983 is an apocalyptic number.

9866772983 is a deficient number, since it is larger than the sum of its proper divisors (1).

9866772983 is an equidigital number, since it uses as much as digits as its factorization.

9866772983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 65.

The square root of 9866772983 is about 99331.6313316156. The cubic root of 9866772983 is about 2144.8242535992.

The spelling of 9866772983 in words is "nine billion, eight hundred sixty-six million, seven hundred seventy-two thousand, nine hundred eighty-three".