4779439 has 4 divisors (see below), whose sum is σ = 5462224. Its totient is φ = 4096656.

The previous prime is 4779433. The next prime is 4779443. The reversal of 4779439 is 9349774.

It is a happy number.

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 4779439 - 2⁹ = 4778927 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4779395 and 4779404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4779433) 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, 341382 + ... + 341395.

It is an arithmetic number, because the mean of its divisors is an integer number (1365556).

Almost surely, 2^4779439 is an apocalyptic number.

4779439 is a deficient number, since it is larger than the sum of its proper divisors (682785).

4779439 is an equidigital number, since it uses as much as digits as its factorization.

4779439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682784.

The product of its digits is 190512, while the sum is 43.

The square root of 4779439 is about 2186.1928094292. The cubic root of 4779439 is about 168.4453297327.

The spelling of 4779439 in words is "four million, seven hundred seventy-nine thousand, four hundred thirty-nine".