4227891 has 8 divisors (see below), whose sum is σ = 5690304. Its totient is φ = 2792040.

The previous prime is 4227887. The next prime is 4227893. The reversal of 4227891 is 1987224.

It is a happy number.

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

It is not a de Polignac number, because 4227891 - 2² = 4227887 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁵ + 2¹⁵ + 7² + 8 + 9³ + 1 .

4227891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4227893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6265 + ... + 6906.

It is an arithmetic number, because the mean of its divisors is an integer number (711288).

Almost surely, 2^4227891 is an apocalyptic number.

4227891 is a deficient number, since it is larger than the sum of its proper divisors (1462413).

4227891 is a wasteful number, since it uses less digits than its factorization.

4227891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13281.

The product of its digits is 8064, while the sum is 33.

The square root of 4227891 is about 2056.1836007516. The cubic root of 4227891 is about 161.6992208979.

The spelling of 4227891 in words is "four million, two hundred twenty-seven thousand, eight hundred ninety-one".