9985207 has 2 divisors, whose sum is σ = 9985208. Its totient is φ = 9985206.

The previous prime is 9985187. The next prime is 9985229. The reversal of 9985207 is 7025899.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9985207 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9985207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9985247) 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, 4992603 + 4992604.

It is an arithmetic number, because the mean of its divisors is an integer number (4992604).

Almost surely, 2^9985207 is an apocalyptic number.

9985207 is a deficient number, since it is larger than the sum of its proper divisors (1).

9985207 is an equidigital number, since it uses as much as digits as its factorization.

9985207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 9985207 is about 3159.9378158438. The cubic root of 9985207 is about 215.3371814010.

The spelling of 9985207 in words is "nine million, nine hundred eighty-five thousand, two hundred seven".