889309 has 2 divisors, whose sum is σ = 889310. Its totient is φ = 889308.

The previous prime is 889289. The next prime is 889313. The reversal of 889309 is 903988.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532900 + 356409 = 730^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 889309 - 2¹¹ = 887261 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 (889349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444654 + 444655.

It is an arithmetic number, because the mean of its divisors is an integer number (444655).

2⁸⁸⁹³⁰⁹ is an apocalyptic number.

It is an amenable number.

889309 is a deficient number, since it is larger than the sum of its proper divisors (1).

889309 is an equidigital number, since it uses as much as digits as its factorization.

889309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 889309 is about 943.0318128250. The cubic root of 889309 is about 96.1651165948.

The spelling of 889309 in words is "eight hundred eighty-nine thousand, three hundred nine".