3878243 has 4 divisors (see below), whose sum is σ = 3883320. Its totient is φ = 3873168.

The previous prime is 3878221. The next prime is 3878263. The reversal of 3878243 is 3428783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3878243 - 2⁸ = 3877987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3878263) 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 3 ways as a sum of consecutive naturals, for example, 1133 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (970830).

Almost surely, 2^3878243 is an apocalyptic number.

3878243 is a deficient number, since it is larger than the sum of its proper divisors (5077).

3878243 is an equidigital number, since it uses as much as digits as its factorization.

3878243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076.

The product of its digits is 32256, while the sum is 35.

The square root of 3878243 is about 1969.3255190547. The cubic root of 3878243 is about 157.1128375950.

The spelling of 3878243 in words is "three million, eight hundred seventy-eight thousand, two hundred forty-three".