4481891 has 4 divisors (see below), whose sum is σ = 4717800. Its totient is φ = 4245984.

The previous prime is 4481881. The next prime is 4481899. The reversal of 4481891 is 1981844.

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 4481891 - 2¹⁰ = 4480867 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4481899) 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, 117926 + ... + 117963.

It is an arithmetic number, because the mean of its divisors is an integer number (1179450).

Almost surely, 2^4481891 is an apocalyptic number.

4481891 is a deficient number, since it is larger than the sum of its proper divisors (235909).

4481891 is a wasteful number, since it uses less digits than its factorization.

4481891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235908.

The product of its digits is 9216, while the sum is 35.

The square root of 4481891 is about 2117.0477084846. The cubic root of 4481891 is about 164.8746032252.

The spelling of 4481891 in words is "four million, four hundred eighty-one thousand, eight hundred ninety-one".