8138329 has 4 divisors (see below), whose sum is σ = 8172340. Its totient is φ = 8104320.

The previous prime is 8138323. The next prime is 8138363. The reversal of 8138329 is 9238318.

8138329 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6512704 + 1625625 = 2552^2 + 1275^2 .

It is a cyclic number.

It is not a de Polignac number, because 8138329 - 2⁷ = 8138201 is a prime.

It is a Duffinian number.

8138329 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8138294 and 8138303.

It is not an unprimeable number, because it can be changed into a prime (8138323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16644 + ... + 17125.

It is an arithmetic number, because the mean of its divisors is an integer number (2043085).

Almost surely, 2^8138329 is an apocalyptic number.

It is an amenable number.

8138329 is a deficient number, since it is larger than the sum of its proper divisors (34011).

8138329 is a wasteful number, since it uses less digits than its factorization.

8138329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34010.

The product of its digits is 10368, while the sum is 34.

The square root of 8138329 is about 2852.7756659086. The cubic root of 8138329 is about 201.1461606975.

The spelling of 8138329 in words is "eight million, one hundred thirty-eight thousand, three hundred twenty-nine".