9959749 has 2 divisors, whose sum is σ = 9959750. Its totient is φ = 9959748.

The previous prime is 9959699. The next prime is 9959753. The reversal of 9959749 is 9479599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9922500 + 37249 = 3150^2 + 193^2 .

It is an emirp because it is prime and its reverse (9479599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9959749 - 2⁹ = 9959237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9959696 and 9959705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9959779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979874 + 4979875.

It is an arithmetic number, because the mean of its divisors is an integer number (4979875).

Almost surely, 2^9959749 is an apocalyptic number.

It is an amenable number.

9959749 is a deficient number, since it is larger than the sum of its proper divisors (1).

9959749 is an equidigital number, since it uses as much as digits as its factorization.

9959749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 52.

The square root of 9959749 is about 3155.9070011646. The cubic root of 9959749 is about 215.1540197988.

The spelling of 9959749 in words is "nine million, nine hundred fifty-nine thousand, seven hundred forty-nine".