889000999 has 2 divisors, whose sum is σ = 889001000. Its totient is φ = 889000998.

The previous prime is 889000997. The next prime is 889001021. The reversal of 889000999 is 999000988.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 889000999 - 2¹ = 889000997 is a prime.

Together with 889000997, it forms a pair of twin primes.

889000999 is a modest number, since divided by 999 gives 889 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889000997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444500499 + 444500500.

It is an arithmetic number, because the mean of its divisors is an integer number (444500500).

Almost surely, 2^889000999 is an apocalyptic number.

889000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

889000999 is an equidigital number, since it uses as much as digits as its factorization.

889000999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 52.

The square root of 889000999 is about 29816.1197844388. The cubic root of 889000999 is about 961.5401345289.

The spelling of 889000999 in words is "eight hundred eighty-nine million, nine hundred ninety-nine", and thus it is an aban number.