9949739 has 2 divisors, whose sum is σ = 9949740. Its totient is φ = 9949738.

The previous prime is 9949733. The next prime is 9949741. The reversal of 9949739 is 9379499.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9949739 is a prime.

Together with 9949741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9949733) 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, 4974869 + 4974870.

It is an arithmetic number, because the mean of its divisors is an integer number (4974870).

Almost surely, 2^9949739 is an apocalyptic number.

9949739 is a deficient number, since it is larger than the sum of its proper divisors (1).

9949739 is an equidigital number, since it uses as much as digits as its factorization.

9949739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 50.

The square root of 9949739 is about 3154.3206875649. The cubic root of 9949739 is about 215.0819157842.

The spelling of 9949739 in words is "nine million, nine hundred forty-nine thousand, seven hundred thirty-nine".