840227 has 4 divisors (see below), whose sum is σ = 843480. Its totient is φ = 836976.

The previous prime is 840223. The next prime is 840239. The reversal of 840227 is 722048.

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 840227 - 2² = 840223 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 840227.

It is not an unprimeable number, because it can be changed into a prime (840223) 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, 1202 + ... + 1767.

It is an arithmetic number, because the mean of its divisors is an integer number (210870).

2⁸⁴⁰²²⁷ is an apocalyptic number.

840227 is a deficient number, since it is larger than the sum of its proper divisors (3253).

840227 is a wasteful number, since it uses less digits than its factorization.

840227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 840227 is about 916.6389692785. The cubic root of 840227 is about 94.3623781784.

The spelling of 840227 in words is "eight hundred forty thousand, two hundred twenty-seven".