347428975209 has 4 divisors (see below), whose sum is σ = 463238633616. Its totient is φ = 231619316804.

The previous prime is 347428975169. The next prime is 347428975217. The reversal of 347428975209 is 902579824743.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-347428975209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (347428975259) 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 in 3 ways as a sum of consecutive naturals, for example, 57904829199 + ... + 57904829204.

It is an arithmetic number, because the mean of its divisors is an integer number (115809658404).

Almost surely, 2^347428975209 is an apocalyptic number.

It is an amenable number.

347428975209 is a deficient number, since it is larger than the sum of its proper divisors (115809658407).

347428975209 is a wasteful number, since it uses less digits than its factorization.

347428975209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115809658406.

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 347428975209 in words is "three hundred forty-seven billion, four hundred twenty-eight million, nine hundred seventy-five thousand, two hundred nine".