9739 has 2 divisors, whose sum is σ = 9740. Its totient is φ = 9738.

The previous prime is 9733. The next prime is 9743. The reversal of 9739 is 9379.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9739 - 2⁹ = 9227 is a prime.

It is a plaindrome in base 12 and base 14.

It is not a weakly prime, because it can be changed into another prime (9733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4869 + 4870.

It is an arithmetic number, because the mean of its divisors is an integer number (4870).

2⁹⁷³⁹ is an apocalyptic number.

9739 is a deficient number, since it is larger than the sum of its proper divisors (1).

9739 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 14 representation: 9739 = (3799)₁₄.

9739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701, while the sum is 28.

The square root of 9739 is about 98.6863719062. The cubic root of 9739 is about 21.3552563262.

It can be divided in two parts, 97 and 39, that added together give a triangular number (136 = T₁₆).

The spelling of 9739 in words is "nine thousand, seven hundred thirty-nine".