3947384 has 16 divisors (see below), whose sum is σ = 8458800. Its totient is φ = 1691712.

The previous prime is 3947369. The next prime is 3947401. The reversal of 3947384 is 4837493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35189 + ... + 35300.

It is an arithmetic number, because the mean of its divisors is an integer number (528675).

Almost surely, 2^3947384 is an apocalyptic number.

It is an amenable number.

3947384 is an abundant number, since it is smaller than the sum of its proper divisors (4511416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3947384 is a wasteful number, since it uses less digits than its factorization.

3947384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70502 (or 70498 counting only the distinct ones).

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

The square root of 3947384 is about 1986.8024562095. The cubic root of 3947384 is about 158.0410084229.

The spelling of 3947384 in words is "three million, nine hundred forty-seven thousand, three hundred eighty-four".