8739 has 6 divisors (see below), whose sum is σ = 12636. Its totient is φ = 5820.

The previous prime is 8737. The next prime is 8741. The reversal of 8739 is 9378.

It is a happy number.

8739 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (8737) and next prime (8741).

It is not a de Polignac number, because 8739 - 2¹ = 8737 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (8731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 477 + ... + 494.

It is an arithmetic number, because the mean of its divisors is an integer number (2106).

2⁸⁷³⁹ is an apocalyptic number.

8739 is a deficient number, since it is larger than the sum of its proper divisors (3897).

8739 is a wasteful number, since it uses less digits than its factorization.

8739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 974 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 8739 is about 93.4826187053. The cubic root of 8739 is about 20.5977878040.

Subtracting from 8739 its product of digits (1512), we obtain a palindrome (7227).

It can be divided in two parts, 8 and 739, that added together give a palindrome (747).

The spelling of 8739 in words is "eight thousand, seven hundred thirty-nine".