4491984 has 80 divisors (see below), whose sum is σ = 13749120. Its totient is φ = 1236480.

The previous prime is 4491953. The next prime is 4491989. The reversal of 4491984 is 4891944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9514 + ... + 9974.

It is an arithmetic number, because the mean of its divisors is an integer number (171864).

Almost surely, 2^4491984 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 4491984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6874560).

4491984 is an abundant number, since it is smaller than the sum of its proper divisors (9257136).

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

4491984 is a wasteful number, since it uses less digits than its factorization.

4491984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 502 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 4491984 is about 2119.4301120820. The cubic root of 4491984 is about 164.9982736275.

It can be divided in two parts, 4491 and 984, that multiplied together give a palindrome (4419144).

The spelling of 4491984 in words is "four million, four hundred ninety-one thousand, nine hundred eighty-four".