4778459 has 4 divisors (see below), whose sum is σ = 5461104. Its totient is φ = 4095816.

The previous prime is 4778453. The next prime is 4778467. The reversal of 4778459 is 9548774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9548774 = 2 ⋅4774387.

It is a cyclic number.

It is not a de Polignac number, because 4778459 - 2²⁰ = 3729883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4778453) 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, 341312 + ... + 341325.

It is an arithmetic number, because the mean of its divisors is an integer number (1365276).

Almost surely, 2^4778459 is an apocalyptic number.

4778459 is a deficient number, since it is larger than the sum of its proper divisors (682645).

4778459 is an equidigital number, since it uses as much as digits as its factorization.

4778459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682644.

The product of its digits is 282240, while the sum is 44.

The square root of 4778459 is about 2185.9686640023. The cubic root of 4778459 is about 168.4338159889.

The spelling of 4778459 in words is "four million, seven hundred seventy-eight thousand, four hundred fifty-nine".