4779823 has 4 divisors (see below), whose sum is σ = 4795408. Its totient is φ = 4764240.

The previous prime is 4779799. The next prime is 4779829. The reversal of 4779823 is 3289774.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4779823 is a prime.

It is a super-2 number, since 2×4779823² = 45693415822658, which contains 22 as substring.

It is a Duffinian number.

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, 7323 + ... + 7948.

It is an arithmetic number, because the mean of its divisors is an integer number (1198852).

Almost surely, 2^4779823 is an apocalyptic number.

4779823 is a deficient number, since it is larger than the sum of its proper divisors (15585).

4779823 is a wasteful number, since it uses less digits than its factorization.

4779823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15584.

The product of its digits is 84672, while the sum is 40.

The square root of 4779823 is about 2186.2806315750. The cubic root of 4779823 is about 168.4498408112.

The spelling of 4779823 in words is "four million, seven hundred seventy-nine thousand, eight hundred twenty-three".