4427891 has 16 divisors (see below), whose sum is σ = 5080320. Its totient is φ = 3828000.

The previous prime is 4427887. The next prime is 4427911. The reversal of 4427891 is 1987244.

4427891 is nontrivially palindromic in base 9.

It is a cyclic number.

It is not a de Polignac number, because 4427891 - 2² = 4427887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4427831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17516 + ... + 17766.

It is an arithmetic number, because the mean of its divisors is an integer number (317520).

Almost surely, 2^4427891 is an apocalyptic number.

4427891 is a deficient number, since it is larger than the sum of its proper divisors (652429).

4427891 is a wasteful number, since it uses less digits than its factorization.

4427891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346.

The product of its digits is 16128, while the sum is 35.

The square root of 4427891 is about 2104.2554502721. The cubic root of 4427891 is about 164.2097628216.

The spelling of 4427891 in words is "four million, four hundred twenty-seven thousand, eight hundred ninety-one".