147221339 has 2 divisors, whose sum is σ = 147221340. Its totient is φ = 147221338.

The previous prime is 147221303. The next prime is 147221341. The reversal of 147221339 is 933122741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 147221339 - 2⁸ = 147221083 is a prime.

Together with 147221341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (147221359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73610669 + 73610670.

It is an arithmetic number, because the mean of its divisors is an integer number (73610670).

Almost surely, 2^147221339 is an apocalyptic number.

147221339 is a deficient number, since it is larger than the sum of its proper divisors (1).

147221339 is an equidigital number, since it uses as much as digits as its factorization.

147221339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 147221339 is about 12133.4800861088. The cubic root of 147221339 is about 528.0279616256.

It can be divided in two parts, 14722 and 1339, that added together give a palindrome (16061).

The spelling of 147221339 in words is "one hundred forty-seven million, two hundred twenty-one thousand, three hundred thirty-nine".