9980287 has 2 divisors, whose sum is σ = 9980288. Its totient is φ = 9980286.

The previous prime is 9980281. The next prime is 9980291. The reversal of 9980287 is 7820899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9980287 - 2³ = 9980279 is a prime.

It is a super-2 number, since 2×9980287² = 199212257204738, which contains 22 as substring.

9980287 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9980281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990143 + 4990144.

It is an arithmetic number, because the mean of its divisors is an integer number (4990144).

Almost surely, 2^9980287 is an apocalyptic number.

9980287 is a deficient number, since it is larger than the sum of its proper divisors (1).

9980287 is an equidigital number, since it uses as much as digits as its factorization.

9980287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 9980287 is about 3159.1592235910. The cubic root of 9980287 is about 215.3018079734.

The spelling of 9980287 in words is "nine million, nine hundred eighty thousand, two hundred eighty-seven".