9980129 has 2 divisors, whose sum is σ = 9980130. Its totient is φ = 9980128.

The previous prime is 9980123. The next prime is 9980141. The reversal of 9980129 is 9210899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9909904 + 70225 = 3148^2 + 265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9980129 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9980092 and 9980101.

It is not a weakly prime, because it can be changed into another prime (9980123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990064 + 4990065.

It is an arithmetic number, because the mean of its divisors is an integer number (4990065).

Almost surely, 2^9980129 is an apocalyptic number.

It is an amenable number.

9980129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9980129 is an equidigital number, since it uses as much as digits as its factorization.

9980129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 9980129 is about 3159.1342168385. The cubic root of 9980129 is about 215.3006718049.

The spelling of 9980129 in words is "nine million, nine hundred eighty thousand, one hundred twenty-nine".