4778984 has 32 divisors (see below), whose sum is σ = 10416000. Its totient is φ = 2013120.

The previous prime is 4778981. The next prime is 4778993. The reversal of 4778984 is 4898774.

It is not an unprimeable number, because it can be changed into a prime (4778981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2717 + ... + 4115.

It is an arithmetic number, because the mean of its divisors is an integer number (325500).

Almost surely, 2^4778984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4778984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5208000).

4778984 is an abundant number, since it is smaller than the sum of its proper divisors (5637016).

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

4778984 is a wasteful number, since it uses less digits than its factorization.

4778984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1469 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 4778984 is about 2186.0887447677. The cubic root of 4778984 is about 168.4399842617.

The spelling of 4778984 in words is "four million, seven hundred seventy-eight thousand, nine hundred eighty-four".