347838845 has 4 divisors (see below), whose sum is σ = 417406620. Its totient is φ = 278271072.

The previous prime is 347838839. The next prime is 347838851. The reversal of 347838845 is 548838743.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548838743 = 3083 ⋅178021.

It is an interprime number because it is at equal distance from previous prime (347838839) and next prime (347838851).

It can be written as a sum of positive squares in 2 ways, for example, as 260435044 + 87403801 = 16138^2 + 9349^2 .

It is a cyclic number.

It is not a de Polignac number, because 347838845 - 2¹⁰ = 347837821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 347838793 and 347838802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34783880 + ... + 34783889.

It is an arithmetic number, because the mean of its divisors is an integer number (104351655).

Almost surely, 2^347838845 is an apocalyptic number.

It is an amenable number.

347838845 is a deficient number, since it is larger than the sum of its proper divisors (69567775).

347838845 is an equidigital number, since it uses as much as digits as its factorization.

347838845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69567774.

The product of its digits is 2580480, while the sum is 50.

The square root of 347838845 is about 18650.4381986054. The cubic root of 347838845 is about 703.2763722029.

The spelling of 347838845 in words is "three hundred forty-seven million, eight hundred thirty-eight thousand, eight hundred forty-five".