889000997 has 2 divisors, whose sum is σ = 889000998. Its totient is φ = 889000996.

The previous prime is 889000943. The next prime is 889000999. The reversal of 889000997 is 799000988.

889000997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 546343876 + 342657121 = 23374^2 + 18511^2 .

It is a cyclic number.

It is not a de Polignac number, because 889000997 - 2⁸ = 889000741 is a prime.

Together with 889000999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889000999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444500498 + 444500499.

It is an arithmetic number, because the mean of its divisors is an integer number (444500499).

Almost surely, 2^889000997 is an apocalyptic number.

It is an amenable number.

889000997 is a deficient number, since it is larger than the sum of its proper divisors (1).

889000997 is an equidigital number, since it uses as much as digits as its factorization.

889000997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 889000997 is about 29816.1197508998. The cubic root of 889000997 is about 961.5401338078.

Subtracting from 889000997 its reverse (799000988), we obtain a palindrome (90000009).

The spelling of 889000997 in words is "eight hundred eighty-nine million, nine hundred ninety-seven", and thus it is an aban number.