4491895 has 8 divisors (see below), whose sum is σ = 5402304. Its totient is φ = 3585504.

The previous prime is 4491887. The next prime is 4491899. The reversal of 4491895 is 5981944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4491895 - 2³ = 4491887 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2722 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (675288).

Almost surely, 2^4491895 is an apocalyptic number.

4491895 is a deficient number, since it is larger than the sum of its proper divisors (910409).

4491895 is a wasteful number, since it uses less digits than its factorization.

4491895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009.

The product of its digits is 51840, while the sum is 40.

The square root of 4491895 is about 2119.4091157679. The cubic root of 4491895 is about 164.9971839128.

The spelling of 4491895 in words is "four million, four hundred ninety-one thousand, eight hundred ninety-five".