9985499 has 2 divisors, whose sum is σ = 9985500. Its totient is φ = 9985498.

The previous prime is 9985453. The next prime is 9985501. The reversal of 9985499 is 9945899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9985499 - 2¹⁶ = 9919963 is a prime.

It is a Sophie Germain prime.

Together with 9985501, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9985499.

It is not a weakly prime, because it can be changed into another prime (9985429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4992749 + 4992750.

It is an arithmetic number, because the mean of its divisors is an integer number (4992750).

Almost surely, 2^9985499 is an apocalyptic number.

9985499 is a deficient number, since it is larger than the sum of its proper divisors (1).

9985499 is an equidigital number, since it uses as much as digits as its factorization.

9985499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 53.

The square root of 9985499 is about 3159.9840189469. The cubic root of 9985499 is about 215.3392804342.

The spelling of 9985499 in words is "nine million, nine hundred eighty-five thousand, four hundred ninety-nine".