4491144 has 144 divisors (see below), whose sum is σ = 15116400. Its totient is φ = 1197504.

The previous prime is 4491133. The next prime is 4491161. The reversal of 4491144 is 4411944.

4491144 = T₁₈₉ + T₁₉₀ + ... + T₃₂₂.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 66999 + ... + 67065.

It is an arithmetic number, because the mean of its divisors is an integer number (104975).

Almost surely, 2^4491144 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 4491144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7558200).

4491144 is an abundant number, since it is smaller than the sum of its proper divisors (10625256).

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

4491144 is a wasteful number, since it uses less digits than its factorization.

4491144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 98 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 4491144 is about 2119.2319363392. The cubic root of 4491144 is about 164.9879881063.

The spelling of 4491144 in words is "four million, four hundred ninety-one thousand, one hundred forty-four".