227989 has 2 divisors, whose sum is σ = 227990. Its totient is φ = 227988.

The previous prime is 227977. The next prime is 227993. The reversal of 227989 is 989722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209764 + 18225 = 458^2 + 135^2 .

It is a cyclic number.

It is not a de Polignac number, because 227989 - 2¹¹ = 225941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113994 + 113995.

It is an arithmetic number, because the mean of its divisors is an integer number (113995).

2²²⁷⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

227989 is a deficient number, since it is larger than the sum of its proper divisors (1).

227989 is an equidigital number, since it uses as much as digits as its factorization.

227989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 227989 is about 477.4819368311. The cubic root of 227989 is about 61.0901649671.

The spelling of 227989 in words is "two hundred twenty-seven thousand, nine hundred eighty-nine".