9864749 has 2 divisors, whose sum is σ = 9864750. Its totient is φ = 9864748.

The previous prime is 9864733. The next prime is 9864761. The reversal of 9864749 is 9474689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9498724 + 366025 = 3082^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 9864749 - 2⁴ = 9864733 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9864719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4932374 + 4932375.

It is an arithmetic number, because the mean of its divisors is an integer number (4932375).

Almost surely, 2^9864749 is an apocalyptic number.

It is an amenable number.

9864749 is a deficient number, since it is larger than the sum of its proper divisors (1).

9864749 is an equidigital number, since it uses as much as digits as its factorization.

9864749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 9864749 is about 3140.8197974414. The cubic root of 9864749 is about 214.4677586778.

The spelling of 9864749 in words is "nine million, eight hundred sixty-four thousand, seven hundred forty-nine".