889355081 has 2 divisors, whose sum is σ = 889355082. Its totient is φ = 889355080.

The previous prime is 889355041. The next prime is 889355141. The reversal of 889355081 is 180553988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625000000 + 264355081 = 25000^2 + 16259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-889355081 is a prime.

It is a super-2 number, since 2×889355081² = 1581904920201033122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (889355011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444677540 + 444677541.

It is an arithmetic number, because the mean of its divisors is an integer number (444677541).

Almost surely, 2^889355081 is an apocalyptic number.

It is an amenable number.

889355081 is a deficient number, since it is larger than the sum of its proper divisors (1).

889355081 is an equidigital number, since it uses as much as digits as its factorization.

889355081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 47.

The square root of 889355081 is about 29822.0569545429. The cubic root of 889355081 is about 961.6677755037.

The spelling of 889355081 in words is "eight hundred eighty-nine million, three hundred fifty-five thousand, eighty-one".