3847643 has 4 divisors (see below), whose sum is σ = 3853320. Its totient is φ = 3841968.

The previous prime is 3847639. The next prime is 3847651. The reversal of 3847643 is 3467483.

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

It is a cyclic number.

It is not a de Polignac number, because 3847643 - 2² = 3847639 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (3847603) 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, 1658 + ... + 3231.

It is an arithmetic number, because the mean of its divisors is an integer number (963330).

Almost surely, 2^3847643 is an apocalyptic number.

3847643 is a deficient number, since it is larger than the sum of its proper divisors (5677).

3847643 is an equidigital number, since it uses as much as digits as its factorization.

3847643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676.

The product of its digits is 48384, while the sum is 35.

The square root of 3847643 is about 1961.5409758657. The cubic root of 3847643 is about 156.6985303129.

The spelling of 3847643 in words is "three million, eight hundred forty-seven thousand, six hundred forty-three".