891227 has 4 divisors (see below), whose sum is σ = 930000. Its totient is φ = 852456.

The previous prime is 891223. The next prime is 891239. The reversal of 891227 is 722198.

It is a happy number.

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 891227 - 2² = 891223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 891227.

It is not an unprimeable number, because it can be changed into a prime (891223) 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, 19352 + ... + 19397.

It is an arithmetic number, because the mean of its divisors is an integer number (232500).

2⁸⁹¹²²⁷ is an apocalyptic number.

891227 is a deficient number, since it is larger than the sum of its proper divisors (38773).

891227 is a wasteful number, since it uses less digits than its factorization.

891227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38772.

The product of its digits is 2016, while the sum is 29.

The square root of 891227 is about 944.0481979221. The cubic root of 891227 is about 96.2342010387.

Subtracting from 891227 its sum of digits (29), we obtain a palindrome (891198).

The spelling of 891227 in words is "eight hundred ninety-one thousand, two hundred twenty-seven".