9671749 has 2 divisors, whose sum is σ = 9671750. Its totient is φ = 9671748.

The previous prime is 9671747. The next prime is 9671771. The reversal of 9671749 is 9471769.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9333025 + 338724 = 3055^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 9671749 - 2¹ = 9671747 is a prime.

Together with 9671747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9671743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4835874 + 4835875.

It is an arithmetic number, because the mean of its divisors is an integer number (4835875).

Almost surely, 2^9671749 is an apocalyptic number.

It is an amenable number.

9671749 is a deficient number, since it is larger than the sum of its proper divisors (1).

9671749 is an equidigital number, since it uses as much as digits as its factorization.

9671749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 43.

The square root of 9671749 is about 3109.9435686199. The cubic root of 9671749 is about 213.0598772201.

The spelling of 9671749 in words is "nine million, six hundred seventy-one thousand, seven hundred forty-nine".