3843947 has 8 divisors (see below), whose sum is σ = 4065600. Its totient is φ = 3624264.

The previous prime is 3843943. The next prime is 3843971. The reversal of 3843947 is 7493483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3843947 - 2² = 3843943 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 3843947.

It is not an unprimeable number, because it can be changed into a prime (3843941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5504 + ... + 6162.

It is an arithmetic number, because the mean of its divisors is an integer number (508200).

Almost surely, 2^3843947 is an apocalyptic number.

3843947 is a deficient number, since it is larger than the sum of its proper divisors (221653).

3843947 is a wasteful number, since it uses less digits than its factorization.

3843947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its digits is 72576, while the sum is 38.

The square root of 3843947 is about 1960.5986330710. The cubic root of 3843947 is about 156.6483399920.

The spelling of 3843947 in words is "three million, eight hundred forty-three thousand, nine hundred forty-seven".