147228239 has 2 divisors, whose sum is σ = 147228240. Its totient is φ = 147228238.

The previous prime is 147228233. The next prime is 147228247. The reversal of 147228239 is 932822741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 147228239 - 2²⁴ = 130451023 is a prime.

It is a super-2 number, since 2×147228239² = 43352308718082242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147228233) 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 as a sum of consecutive naturals, namely, 73614119 + 73614120.

It is an arithmetic number, because the mean of its divisors is an integer number (73614120).

Almost surely, 2^147228239 is an apocalyptic number.

147228239 is a deficient number, since it is larger than the sum of its proper divisors (1).

147228239 is an equidigital number, since it uses as much as digits as its factorization.

147228239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 147228239 is about 12133.7644199976. The cubic root of 147228239 is about 528.0362107378.

The spelling of 147228239 in words is "one hundred forty-seven million, two hundred twenty-eight thousand, two hundred thirty-nine".