164221339 has 2 divisors, whose sum is σ = 164221340. Its totient is φ = 164221338.

The previous prime is 164221331. The next prime is 164221349. The reversal of 164221339 is 933122461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164221339 - 2³ = 164221331 is a prime.

It is a super-3 number, since 3×164221339³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164221339.

It is not a weakly prime, because it can be changed into another prime (164221331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82110669 + 82110670.

It is an arithmetic number, because the mean of its divisors is an integer number (82110670).

Almost surely, 2^164221339 is an apocalyptic number.

164221339 is a deficient number, since it is larger than the sum of its proper divisors (1).

164221339 is an equidigital number, since it uses as much as digits as its factorization.

164221339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 164221339 is about 12814.8873970862. The cubic root of 164221339 is about 547.6165055817.

The spelling of 164221339 in words is "one hundred sixty-four million, two hundred twenty-one thousand, three hundred thirty-nine".