3968939 has 8 divisors (see below), whose sum is σ = 4525920. Its totient is φ = 3447936.

The previous prime is 3968917. The next prime is 3968941. The reversal of 3968939 is 9398693.

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 3968939 - 2¹² = 3964843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3968893 and 3968902.

It is not an unprimeable number, because it can be changed into a prime (3968339) 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, 8759 + ... + 9200.

It is an arithmetic number, because the mean of its divisors is an integer number (565740).

Almost surely, 2^3968939 is an apocalyptic number.

3968939 is a deficient number, since it is larger than the sum of its proper divisors (556981).

3968939 is a wasteful number, since it uses less digits than its factorization.

3968939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17989.

The product of its digits is 314928, while the sum is 47.

The square root of 3968939 is about 1992.2196164078. The cubic root of 3968939 is about 158.3281515079.

The spelling of 3968939 in words is "three million, nine hundred sixty-eight thousand, nine hundred thirty-nine".