9963749 has 2 divisors, whose sum is σ = 9963750. Its totient is φ = 9963748.

The previous prime is 9963739. The next prime is 9963769. The reversal of 9963749 is 9473699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6466849 + 3496900 = 2543^2 + 1870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9963749 is a prime.

It is a d-powerful number, because it can be written as 9² + 9² + 6⁷ + 3¹⁴ + 7⁶ + 4³ + 9⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9963719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4981874 + 4981875.

It is an arithmetic number, because the mean of its divisors is an integer number (4981875).

Almost surely, 2^9963749 is an apocalyptic number.

It is an amenable number.

9963749 is a deficient number, since it is larger than the sum of its proper divisors (1).

9963749 is an equidigital number, since it uses as much as digits as its factorization.

9963749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 47.

The square root of 9963749 is about 3156.5406697839. The cubic root of 9963749 is about 215.1828190818.

The spelling of 9963749 in words is "nine million, nine hundred sixty-three thousand, seven hundred forty-nine".