8747329 has 2 divisors, whose sum is σ = 8747330. Its totient is φ = 8747328.

The previous prime is 8747327. The next prime is 8747381. The reversal of 8747329 is 9237478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8294400 + 452929 = 2880^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 8747329 - 2¹ = 8747327 is a prime.

Together with 8747327, it forms a pair of twin primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8747291 and 8747300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8747327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4373664 + 4373665.

It is an arithmetic number, because the mean of its divisors is an integer number (4373665).

Almost surely, 2^8747329 is an apocalyptic number.

It is an amenable number.

8747329 is a deficient number, since it is larger than the sum of its proper divisors (1).

8747329 is an equidigital number, since it uses as much as digits as its factorization.

8747329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 8747329 is about 2957.5883756872. The cubic root of 8747329 is about 206.0432953270.

The spelling of 8747329 in words is "eight million, seven hundred forty-seven thousand, three hundred twenty-nine".