3978983 has 4 divisors (see below), whose sum is σ = 3986088. Its totient is φ = 3971880.

The previous prime is 3978979. The next prime is 3979013. The reversal of 3978983 is 3898793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3898793 = 193 ⋅20201.

It is a cyclic number.

It is not a de Polignac number, because 3978983 - 2² = 3978979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978283) 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, 2633 + ... + 3858.

It is an arithmetic number, because the mean of its divisors is an integer number (996522).

Almost surely, 2^3978983 is an apocalyptic number.

3978983 is a deficient number, since it is larger than the sum of its proper divisors (7105).

3978983 is an equidigital number, since it uses as much as digits as its factorization.

3978983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7104.

The product of its digits is 326592, while the sum is 47.

The square root of 3978983 is about 1994.7388300226. The cubic root of 3978983 is about 158.4615967756.

The spelling of 3978983 in words is "three million, nine hundred seventy-eight thousand, nine hundred eighty-three".