4123839 has 4 divisors (see below), whose sum is σ = 5498456. Its totient is φ = 2749224.

The previous prime is 4123813. The next prime is 4123841. The reversal of 4123839 is 9383214.

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

It is not a de Polignac number, because 4123839 - 2⁸ = 4123583 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687304 + ... + 687309.

It is an arithmetic number, because the mean of its divisors is an integer number (1374614).

Almost surely, 2^4123839 is an apocalyptic number.

4123839 is a deficient number, since it is larger than the sum of its proper divisors (1374617).

4123839 is a wasteful number, since it uses less digits than its factorization.

4123839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374616.

The product of its digits is 5184, while the sum is 30.

The square root of 4123839 is about 2030.7237626029. The cubic root of 4123839 is about 160.3616688360.

The spelling of 4123839 in words is "four million, one hundred twenty-three thousand, eight hundred thirty-nine".