4491040 has 24 divisors (see below), whose sum is σ = 10610460. Its totient is φ = 1796352.

The previous prime is 4491037. The next prime is 4491079. The reversal of 4491040 is 401944.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4145296 + 345744 = 2036^2 + 588^2 .

It is a zygodrome in base 3.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13875 + ... + 14194.

Almost surely, 2^4491040 is an apocalyptic number.

4491040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4491040 is an abundant number, since it is smaller than the sum of its proper divisors (6119420).

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

4491040 is a wasteful number, since it uses less digits than its factorization.

4491040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28084 (or 28076 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 4491040 is about 2119.2073990056. The cubic root of 4491040 is about 164.9867145716.

Adding to 4491040 its reverse (401944), we get a palindrome (4892984).

The spelling of 4491040 in words is "four million, four hundred ninety-one thousand, forty".