347012639 has 2 divisors, whose sum is σ = 347012640. Its totient is φ = 347012638.

The previous prime is 347012621. The next prime is 347012693. The reversal of 347012639 is 936210743.

Together with next prime (347012693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 347012639 - 2⁸ = 347012383 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 347012599 and 347012608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347017639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173506319 + 173506320.

It is an arithmetic number, because the mean of its divisors is an integer number (173506320).

Almost surely, 2^347012639 is an apocalyptic number.

347012639 is a deficient number, since it is larger than the sum of its proper divisors (1).

347012639 is an equidigital number, since it uses as much as digits as its factorization.

347012639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 347012639 is about 18628.2752556430. The cubic root of 347012639 is about 702.7191104872.

The spelling of 347012639 in words is "three hundred forty-seven million, twelve thousand, six hundred thirty-nine".