9909499 has 2 divisors, whose sum is σ = 9909500. Its totient is φ = 9909498.

The previous prime is 9909461. The next prime is 9909509. The reversal of 9909499 is 9949099.

It is a strong prime.

It is an emirp because it is prime and its reverse (9949099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9909499 - 2²¹ = 7812347 is a prime.

It is not a weakly prime, because it can be changed into another prime (9909409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954749 + 4954750.

It is an arithmetic number, because the mean of its divisors is an integer number (4954750).

Almost surely, 2^9909499 is an apocalyptic number.

9909499 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909499 is an equidigital number, since it uses as much as digits as its factorization.

9909499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 49.

The square root of 9909499 is about 3147.9356727862. The cubic root of 9909499 is about 214.7915701339.

The spelling of 9909499 in words is "nine million, nine hundred nine thousand, four hundred ninety-nine".