3978343 has 8 divisors (see below), whose sum is σ = 4073760. Its totient is φ = 3884160.

The previous prime is 3978329. The next prime is 3978349. The reversal of 3978343 is 3438793.

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 3978343 - 2¹³ = 3970151 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 9² + 7⁷ + 8⁷ + 3⁷ + 4¹⁰ + 3⁸ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9523 + ... + 9931.

It is an arithmetic number, because the mean of its divisors is an integer number (509220).

Almost surely, 2^3978343 is an apocalyptic number.

3978343 is a deficient number, since it is larger than the sum of its proper divisors (95417).

3978343 is a wasteful number, since it uses less digits than its factorization.

3978343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617.

The product of its digits is 54432, while the sum is 37.

The square root of 3978343 is about 1994.5784015676. The cubic root of 3978343 is about 158.4531003952.

The spelling of 3978343 in words is "three million, nine hundred seventy-eight thousand, three hundred forty-three".