9988000073 has 2 divisors, whose sum is σ = 9988000074. Its totient is φ = 9988000072.

The previous prime is 9988000067. The next prime is 9988000093. The reversal of 9988000073 is 3700008899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9053903104 + 934096969 = 95152^2 + 30563^2 .

It is a cyclic number.

It is not a de Polignac number, because 9988000073 - 2¹⁴ = 9987983689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9987999988 and 9988000033.

It is not a weakly prime, because it can be changed into another prime (9988000013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994000036 + 4994000037.

It is an arithmetic number, because the mean of its divisors is an integer number (4994000037).

Almost surely, 2^9988000073 is an apocalyptic number.

It is an amenable number.

9988000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988000073 is an equidigital number, since it uses as much as digits as its factorization.

9988000073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 9988000073 is about 99939.9823544111. The cubic root of 9988000073 is about 2153.5725764630.

The spelling of 9988000073 in words is "nine billion, nine hundred eighty-eight million, seventy-three", and thus it is an aban number.