4491856 has 20 divisors (see below), whose sum is σ = 8868852. Its totient is φ = 2203136.

The previous prime is 4491841. The next prime is 4491871. The reversal of 4491856 is 6581944.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4491841) and next prime (4491871).

It can be written as a sum of positive squares in 2 ways, for example, as 3459600 + 1032256 = 1860^2 + 1016^2 .

It is a congruent number.

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, 1801 + ... + 3496.

Almost surely, 2^4491856 is an apocalyptic number.

It is an amenable number.

4491856 is a deficient number, since it is larger than the sum of its proper divisors (4376996).

4491856 is a wasteful number, since it uses less digits than its factorization.

4491856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358 (or 5352 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 4491856 is about 2119.3999150703. The cubic root of 4491856 is about 164.9967063928.

The spelling of 4491856 in words is "four million, four hundred ninety-one thousand, eight hundred fifty-six".