4491784 has 16 divisors (see below), whose sum is σ = 9187920. Its totient is φ = 2041680.

The previous prime is 4491769. The next prime is 4491787. The reversal of 4491784 is 4871944.

It is a super-2 number, since 2×4491784² = 40352247005312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4491787) 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, 25434 + ... + 25609.

It is an arithmetic number, because the mean of its divisors is an integer number (574245).

Almost surely, 2^4491784 is an apocalyptic number.

4491784 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4491784 is an abundant number, since it is smaller than the sum of its proper divisors (4696136).

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

4491784 is a wasteful number, since it uses less digits than its factorization.

4491784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51060 (or 51056 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 4491784 is about 2119.3829290621. The cubic root of 4491784 is about 164.9958248102.

It can be divided in two parts, 4 and 491784, that multiplied together give a triangular number (1967136 = T₁₉₈₃).

The spelling of 4491784 in words is "four million, four hundred ninety-one thousand, seven hundred eighty-four".