9988973707 has 2 divisors, whose sum is σ = 9988973708. Its totient is φ = 9988973706.

The previous prime is 9988973677. The next prime is 9988973711. The reversal of 9988973707 is 7073798899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9988973707 - 2²³ = 9980585099 is a prime.

It is not a weakly prime, because it can be changed into another prime (9988973737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994486853 + 4994486854.

It is an arithmetic number, because the mean of its divisors is an integer number (4994486854).

Almost surely, 2^9988973707 is an apocalyptic number.

9988973707 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988973707 is an equidigital number, since it uses as much as digits as its factorization.

9988973707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48009024, while the sum is 67.

The square root of 9988973707 is about 99944.8533292235. The cubic root of 9988973707 is about 2153.6425512106.

The spelling of 9988973707 in words is "nine billion, nine hundred eighty-eight million, nine hundred seventy-three thousand, seven hundred seven".