4778789 has 8 divisors (see below), whose sum is σ = 4878720. Its totient is φ = 4680000.

The previous prime is 4778783. The next prime is 4778791. The reversal of 4778789 is 9878774.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4778789 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18914 + ... + 19164.

It is an arithmetic number, because the mean of its divisors is an integer number (609840).

Almost surely, 2^4778789 is an apocalyptic number.

It is an amenable number.

4778789 is a deficient number, since it is larger than the sum of its proper divisors (99931).

4778789 is a wasteful number, since it uses less digits than its factorization.

4778789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its digits is 790272, while the sum is 50.

The square root of 4778789 is about 2186.0441441105. The cubic root of 4778789 is about 168.4376932417.

The spelling of 4778789 in words is "four million, seven hundred seventy-eight thousand, seven hundred eighty-nine".