9980123 has 2 divisors, whose sum is σ = 9980124. Its totient is φ = 9980122.

The previous prime is 9980107. The next prime is 9980129. The reversal of 9980123 is 3210899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9980123 - 2⁴ = 9980107 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9980123.

It is not a weakly prime, because it can be changed into another prime (9980129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990061 + 4990062.

It is an arithmetic number, because the mean of its divisors is an integer number (4990062).

Almost surely, 2^9980123 is an apocalyptic number.

9980123 is a deficient number, since it is larger than the sum of its proper divisors (1).

9980123 is an equidigital number, since it uses as much as digits as its factorization.

9980123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 9980123 is about 3159.1332672111. The cubic root of 9980123 is about 215.3006286590.

The spelling of 9980123 in words is "nine million, nine hundred eighty thousand, one hundred twenty-three".