9980723 has 2 divisors, whose sum is σ = 9980724. Its totient is φ = 9980722.

The previous prime is 9980699. The next prime is 9980731. The reversal of 9980723 is 3270899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9980723 - 2¹² = 9976627 is a prime.

It is a super-2 number, since 2×9980723² = 199229663205458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9980123) 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, 4990361 + 4990362.

It is an arithmetic number, because the mean of its divisors is an integer number (4990362).

Almost surely, 2^9980723 is an apocalyptic number.

9980723 is a deficient number, since it is larger than the sum of its proper divisors (1).

9980723 is an equidigital number, since it uses as much as digits as its factorization.

9980723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 9980723 is about 3159.2282285394. The cubic root of 9980723 is about 215.3049431612.

The spelling of 9980723 in words is "nine million, nine hundred eighty thousand, seven hundred twenty-three".