347908442689 has 4 divisors (see below), whose sum is σ = 348245237956. Its totient is φ = 347571647424.

The previous prime is 347908442683. The next prime is 347908442729. The reversal of 347908442689 is 986244809743.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224993692225 + 122914750464 = 474335^2 + 350592^2 .

It is a cyclic number.

It is not a de Polignac number, because 347908442689 - 2⁵ = 347908442657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 347908442689.

It is not an unprimeable number, because it can be changed into a prime (347908442683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168396084 + ... + 168398149.

It is an arithmetic number, because the mean of its divisors is an integer number (87061309489).

Almost surely, 2^347908442689 is an apocalyptic number.

It is an amenable number.

347908442689 is a deficient number, since it is larger than the sum of its proper divisors (336795267).

347908442689 is a wasteful number, since it uses less digits than its factorization.

347908442689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336795266.

The product of its (nonzero) digits is 83607552, while the sum is 64.

The spelling of 347908442689 in words is "three hundred forty-seven billion, nine hundred eight million, four hundred forty-two thousand, six hundred eighty-nine".