3978933 has 8 divisors (see below), whose sum is σ = 6063168. Its totient is φ = 2273664.

The previous prime is 3978917. The next prime is 3978967. The reversal of 3978933 is 3398793.

It is a happy number.

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

It is not a de Polignac number, because 3978933 - 2⁴ = 3978917 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978433) 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, 94716 + ... + 94757.

It is an arithmetic number, because the mean of its divisors is an integer number (757896).

Almost surely, 2^3978933 is an apocalyptic number.

It is an amenable number.

3978933 is a deficient number, since it is larger than the sum of its proper divisors (2084235).

3978933 is a wasteful number, since it uses less digits than its factorization.

3978933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189483.

The product of its digits is 122472, while the sum is 42.

The square root of 3978933 is about 1994.7262970142. The cubic root of 3978933 is about 158.4609330287.

The spelling of 3978933 in words is "three million, nine hundred seventy-eight thousand, nine hundred thirty-three".