4778946 has 16 divisors (see below), whose sum is σ = 10620000. Its totient is φ = 1592964.

The previous prime is 4778933. The next prime is 4778953. The reversal of 4778946 is 6498774.

It is an unprimeable number.

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, 44196 + ... + 44303.

It is an arithmetic number, because the mean of its divisors is an integer number (663750).

Almost surely, 2^4778946 is an apocalyptic number.

4778946 is an abundant number, since it is smaller than the sum of its proper divisors (5841054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4778946 is a wasteful number, since it uses less digits than its factorization.

4778946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88510 (or 88504 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 4778946 is about 2186.0800534290. The cubic root of 4778946 is about 168.4395378114.

The spelling of 4778946 in words is "four million, seven hundred seventy-eight thousand, nine hundred forty-six".