9999984937 has 2 divisors, whose sum is σ = 9999984938. Its totient is φ = 9999984936.

The previous prime is 9999984901. The next prime is 9999984949. The reversal of 9999984937 is 7394899999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8045372416 + 1954612521 = 89696^2 + 44211^2 .

It is a cyclic number.

It is not a de Polignac number, because 9999984937 - 2³¹ = 7852501289 is a prime.

It is not a weakly prime, because it can be changed into another prime (9999984977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999992468 + 4999992469.

It is an arithmetic number, because the mean of its divisors is an integer number (4999992469).

Almost surely, 2^9999984937 is an apocalyptic number.

It is an amenable number.

9999984937 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999984937 is an equidigital number, since it uses as much as digits as its factorization.

9999984937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357128352, while the sum is 76.

The square root of 9999984937 is about 99999.9246849716. The cubic root of 9999984937 is about 2154.4336082897.

The spelling of 9999984937 in words is "nine billion, nine hundred ninety-nine million, nine hundred eighty-four thousand, nine hundred thirty-seven".