4779839 has 4 divisors (see below), whose sum is σ = 5061024. Its totient is φ = 4498656.

The previous prime is 4779829. The next prime is 4779851. The reversal of 4779839 is 9389774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9389774 = 2 ⋅4694887.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4779839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4779793 and 4779802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4779829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140567 + ... + 140600.

It is an arithmetic number, because the mean of its divisors is an integer number (1265256).

Almost surely, 2^4779839 is an apocalyptic number.

4779839 is a deficient number, since it is larger than the sum of its proper divisors (281185).

4779839 is a wasteful number, since it uses less digits than its factorization.

4779839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281184.

The product of its digits is 381024, while the sum is 47.

The square root of 4779839 is about 2186.2842907545. The cubic root of 4779839 is about 168.4500287676.

The spelling of 4779839 in words is "four million, seven hundred seventy-nine thousand, eight hundred thirty-nine".