4491839 has 8 divisors (see below), whose sum is σ = 5069520. Its totient is φ = 3942400.

The previous prime is 4491833. The next prime is 4491841. The reversal of 4491839 is 9381944.

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

It is a de Polignac number, because none of the positive numbers 2^k-4491839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491833) 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, 6722 + ... + 7359.

It is an arithmetic number, because the mean of its divisors is an integer number (633690).

Almost surely, 2^4491839 is an apocalyptic number.

4491839 is a deficient number, since it is larger than the sum of its proper divisors (577681).

4491839 is a wasteful number, since it uses less digits than its factorization.

4491839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14121.

The product of its digits is 31104, while the sum is 38.

The square root of 4491839 is about 2119.3959044973. The cubic root of 4491839 is about 164.9964982422.

The spelling of 4491839 in words is "four million, four hundred ninety-one thousand, eight hundred thirty-nine".