345147839 has 2 divisors, whose sum is σ = 345147840. Its totient is φ = 345147838.

The previous prime is 345147833. The next prime is 345147851. The reversal of 345147839 is 938741543.

It is a weak prime.

It is an emirp because it is prime and its reverse (938741543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345147839 - 2⁴ = 345147823 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345147839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345147833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172573919 + 172573920.

It is an arithmetic number, because the mean of its divisors is an integer number (172573920).

Almost surely, 2^345147839 is an apocalyptic number.

345147839 is a deficient number, since it is larger than the sum of its proper divisors (1).

345147839 is an equidigital number, since it uses as much as digits as its factorization.

345147839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 345147839 is about 18578.1548868557. The cubic root of 345147839 is about 701.4580757360.

The spelling of 345147839 in words is "three hundred forty-five million, one hundred forty-seven thousand, eight hundred thirty-nine".