4778243 has 4 divisors (see below), whose sum is σ = 4943040. Its totient is φ = 4613448.

The previous prime is 4778237. The next prime is 4778303. The reversal of 4778243 is 3428774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3428774 = 2 ⋅1714387.

It is a cyclic number.

It is not a de Polignac number, because 4778243 - 2¹⁰ = 4777219 is a prime.

It is a d-powerful number, because it can be written as 4⁵ + 7² + 7⁷ + 8 + 2²¹ + 4⁹ + 3¹³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4778843) 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, 82355 + ... + 82412.

It is an arithmetic number, because the mean of its divisors is an integer number (1235760).

Almost surely, 2^4778243 is an apocalyptic number.

4778243 is a deficient number, since it is larger than the sum of its proper divisors (164797).

4778243 is a wasteful number, since it uses less digits than its factorization.

4778243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164796.

The product of its digits is 37632, while the sum is 35.

The square root of 4778243 is about 2185.9192574292. The cubic root of 4778243 is about 168.4312780541.

The spelling of 4778243 in words is "four million, seven hundred seventy-eight thousand, two hundred forty-three".