889391 has 2 divisors, whose sum is σ = 889392. Its totient is φ = 889390.

The previous prime is 889373. The next prime is 889411. The reversal of 889391 is 193988.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 889391 - 2⁶ = 889327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889351) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444695 + 444696.

It is an arithmetic number, because the mean of its divisors is an integer number (444696).

2⁸⁸⁹³⁹¹ is an apocalyptic number.

889391 is a deficient number, since it is larger than the sum of its proper divisors (1).

889391 is an equidigital number, since it uses as much as digits as its factorization.

889391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The square root of 889391 is about 943.0752886170. The cubic root of 889391 is about 96.1680721844.

The spelling of 889391 in words is "eight hundred eighty-nine thousand, three hundred ninety-one".