227239139 has 2 divisors, whose sum is σ = 227239140. Its totient is φ = 227239138.

The previous prime is 227239109. The next prime is 227239151. The reversal of 227239139 is 931932722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 227239139 - 2⁸ = 227238883 is a prime.

It is a super-2 number, since 2×227239139² = 103275252586922642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (227239109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113619569 + 113619570.

It is an arithmetic number, because the mean of its divisors is an integer number (113619570).

Almost surely, 2^227239139 is an apocalyptic number.

227239139 is a deficient number, since it is larger than the sum of its proper divisors (1).

227239139 is an equidigital number, since it uses as much as digits as its factorization.

227239139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 227239139 is about 15074.4531907463. The cubic root of 227239139 is about 610.2311575775.

The spelling of 227239139 in words is "two hundred twenty-seven million, two hundred thirty-nine thousand, one hundred thirty-nine".