889809061 has 2 divisors, whose sum is σ = 889809062. Its totient is φ = 889809060.

The previous prime is 889809047. The next prime is 889809157. The reversal of 889809061 is 160908988.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713424100 + 176384961 = 26710^2 + 13281^2 .

It is a cyclic number.

It is not a de Polignac number, because 889809061 - 2¹⁷ = 889677989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 889808996 and 889809014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889809161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444904530 + 444904531.

It is an arithmetic number, because the mean of its divisors is an integer number (444904531).

Almost surely, 2^889809061 is an apocalyptic number.

It is an amenable number.

889809061 is a deficient number, since it is larger than the sum of its proper divisors (1).

889809061 is an equidigital number, since it uses as much as digits as its factorization.

889809061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 889809061 is about 29829.6674637851. The cubic root of 889809061 is about 961.8313785767.

The spelling of 889809061 in words is "eight hundred eighty-nine million, eight hundred nine thousand, sixty-one".