4491911 has 4 divisors (see below), whose sum is σ = 4613352. Its totient is φ = 4370472.

The previous prime is 4491899. The next prime is 4491913. The reversal of 4491911 is 1191944.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4491911 - 2¹⁸ = 4229767 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 (4491913) 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, 60665 + ... + 60738.

It is an arithmetic number, because the mean of its divisors is an integer number (1153338).

Almost surely, 2^4491911 is an apocalyptic number.

4491911 is a deficient number, since it is larger than the sum of its proper divisors (121441).

4491911 is a wasteful number, since it uses less digits than its factorization.

4491911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121440.

The product of its digits is 1296, while the sum is 29.

The square root of 4491911 is about 2119.4128904015. The cubic root of 4491911 is about 164.9973798176.

The spelling of 4491911 in words is "four million, four hundred ninety-one thousand, nine hundred eleven".