9749989 has 2 divisors, whose sum is σ = 9749990. Its totient is φ = 9749988.

The previous prime is 9749963. The next prime is 9750001. The reversal of 9749989 is 9899479.

9749989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5616900 + 4133089 = 2370^2 + 2033^2 .

It is a cyclic number.

It is not a de Polignac number, because 9749989 - 2¹⁵ = 9717221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9749189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4874994 + 4874995.

It is an arithmetic number, because the mean of its divisors is an integer number (4874995).

Almost surely, 2^9749989 is an apocalyptic number.

It is an amenable number.

9749989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9749989 is an equidigital number, since it uses as much as digits as its factorization.

9749989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 55.

The square root of 9749989 is about 3122.4972377890. The cubic root of 9749989 is about 213.6328537443.

It can be divided in two parts, 97 and 49989, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 9749989 in words is "nine million, seven hundred forty-nine thousand, nine hundred eighty-nine".