4022839 has 4 divisors (see below), whose sum is σ = 4152640. Its totient is φ = 3893040.

The previous prime is 4022831. The next prime is 4022849. The reversal of 4022839 is 9382204.

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 4022839 - 2³ = 4022831 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 (4022831) 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, 64854 + ... + 64915.

It is an arithmetic number, because the mean of its divisors is an integer number (1038160).

Almost surely, 2^4022839 is an apocalyptic number.

4022839 is a deficient number, since it is larger than the sum of its proper divisors (129801).

4022839 is a wasteful number, since it uses less digits than its factorization.

4022839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129800.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 4022839 is about 2005.7016228742. The cubic root of 4022839 is about 159.0416541052.

The spelling of 4022839 in words is "four million, twenty-two thousand, eight hundred thirty-nine".