347240239 has 2 divisors, whose sum is σ = 347240240. Its totient is φ = 347240238.

The previous prime is 347240233. The next prime is 347240273. The reversal of 347240239 is 932042743.

It is a happy number.

It is an a-pointer prime, because the next prime (347240273) can be obtained adding 347240239 to its sum of digits (34).

It is a weak prime.

It is an emirp because it is prime and its reverse (932042743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 347240239 - 2¹⁹ = 346715951 is a prime.

It is equal to p_18663208 and since 347240239 and 18663208 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347240233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173620119 + 173620120.

It is an arithmetic number, because the mean of its divisors is an integer number (173620120).

Almost surely, 2^347240239 is an apocalyptic number.

347240239 is a deficient number, since it is larger than the sum of its proper divisors (1).

347240239 is an equidigital number, since it uses as much as digits as its factorization.

347240239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 347240239 is about 18634.3832471053. The cubic root of 347240239 is about 702.8727109590.

The spelling of 347240239 in words is "three hundred forty-seven million, two hundred forty thousand, two hundred thirty-nine".