4638984 has 64 divisors (see below), whose sum is σ = 13530240. Its totient is φ = 1297920.

The previous prime is 4638979. The next prime is 4639003. The reversal of 4638984 is 4898364.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8644 + ... + 9164.

It is an arithmetic number, because the mean of its divisors is an integer number (211410).

Almost surely, 2^4638984 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 4638984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6765120).

4638984 is an abundant number, since it is smaller than the sum of its proper divisors (8891256).

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

4638984 is a wasteful number, since it uses less digits than its factorization.

4638984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 586 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 4638984 is about 2153.8300768631. The cubic root of 4638984 is about 166.7788435922.

It can be divided in two parts, 46389 and 84, that multiplied together give a square (3896676 = 1974²).

The spelling of 4638984 in words is "four million, six hundred thirty-eight thousand, nine hundred eighty-four".