4491849 has 4 divisors (see below), whose sum is σ = 5989136. Its totient is φ = 2994564.

The previous prime is 4491841. The next prime is 4491871. The reversal of 4491849 is 9481944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4491849 - 2³ = 4491841 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4491841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748639 + ... + 748644.

It is an arithmetic number, because the mean of its divisors is an integer number (1497284).

Almost surely, 2^4491849 is an apocalyptic number.

It is an amenable number.

4491849 is a deficient number, since it is larger than the sum of its proper divisors (1497287).

4491849 is a wasteful number, since it uses less digits than its factorization.

4491849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497286.

The product of its digits is 41472, while the sum is 39.

The square root of 4491849 is about 2119.3982636588. The cubic root of 4491849 is about 164.9966206838.

The spelling of 4491849 in words is "four million, four hundred ninety-one thousand, eight hundred forty-nine".