8221339 has 4 divisors (see below), whose sum is σ = 9395824. Its totient is φ = 7046856.

The previous prime is 8221337. The next prime is 8221349. The reversal of 8221339 is 9331228.

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

It is a cyclic number.

It is not a de Polignac number, because 8221339 - 2¹ = 8221337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8221331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587232 + ... + 587245.

It is an arithmetic number, because the mean of its divisors is an integer number (2348956).

Almost surely, 2^8221339 is an apocalyptic number.

8221339 is a deficient number, since it is larger than the sum of its proper divisors (1174485).

8221339 is a wasteful number, since it uses less digits than its factorization.

8221339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174484.

The product of its digits is 2592, while the sum is 28.

The square root of 8221339 is about 2867.2877427981. The cubic root of 8221339 is about 201.8277376603.

The spelling of 8221339 in words is "eight million, two hundred twenty-one thousand, three hundred thirty-nine".