4639424 has 28 divisors (see below), whose sum is σ = 9345168. Its totient is φ = 2284800.

The previous prime is 4639423. The next prime is 4639447. The reversal of 4639424 is 4249364.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (4639423) 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, 4034 + ... + 5054.

It is an arithmetic number, because the mean of its divisors is an integer number (333756).

Almost surely, 2^4639424 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 4639424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4672584).

4639424 is an abundant number, since it is smaller than the sum of its proper divisors (4705744).

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

4639424 is a wasteful number, since it uses less digits than its factorization.

4639424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104 (or 1094 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 4639424 is about 2153.9322180607. The cubic root of 4639424 is about 166.7841163251.

The spelling of 4639424 in words is "four million, six hundred thirty-nine thousand, four hundred twenty-four".