916189 has 2 divisors, whose sum is σ = 916190. Its totient is φ = 916188.

The previous prime is 916187. The next prime is 916213. The reversal of 916189 is 981619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 13689 = 950^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 916189 - 2¹ = 916187 is a prime.

Together with 916187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (916183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458094 + 458095.

It is an arithmetic number, because the mean of its divisors is an integer number (458095).

2⁹¹⁶¹⁸⁹ is an apocalyptic number.

It is an amenable number.

916189 is a deficient number, since it is larger than the sum of its proper divisors (1).

916189 is an equidigital number, since it uses as much as digits as its factorization.

916189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 34.

The square root of 916189 is about 957.1776219699. The cubic root of 916189 is about 97.1244019769.

The spelling of 916189 in words is "nine hundred sixteen thousand, one hundred eighty-nine".