3884839 has 4 divisors (see below), whose sum is σ = 4439824. Its totient is φ = 3329856.

The previous prime is 3884833. The next prime is 3884843. The reversal of 3884839 is 9384883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9384883 = 197 ⋅47639.

It is a cyclic number.

It is not a de Polignac number, because 3884839 - 2³ = 3884831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3884795 and 3884804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3884831) 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, 277482 + ... + 277495.

It is an arithmetic number, because the mean of its divisors is an integer number (1109956).

Almost surely, 2^3884839 is an apocalyptic number.

3884839 is a deficient number, since it is larger than the sum of its proper divisors (554985).

3884839 is an equidigital number, since it uses as much as digits as its factorization.

3884839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554984.

The product of its digits is 165888, while the sum is 43.

The square root of 3884839 is about 1970.9994926433. Note that the first 3 decimals coincide. The cubic root of 3884839 is about 157.2018580887.

The spelling of 3884839 in words is "three million, eight hundred eighty-four thousand, eight hundred thirty-nine".