9986974859 has 2 divisors, whose sum is σ = 9986974860. Its totient is φ = 9986974858.

The previous prime is 9986974841. The next prime is 9986974891. The reversal of 9986974859 is 9584796899.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9986974859 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9986974259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993487429 + 4993487430.

It is an arithmetic number, because the mean of its divisors is an integer number (4993487430).

Almost surely, 2^9986974859 is an apocalyptic number.

9986974859 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986974859 is an equidigital number, since it uses as much as digits as its factorization.

9986974859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352719360, while the sum is 74.

The square root of 9986974859 is about 99934.8530743904. The cubic root of 9986974859 is about 2153.4988897628.

The spelling of 9986974859 in words is "nine billion, nine hundred eighty-six million, nine hundred seventy-four thousand, eight hundred fifty-nine".