889808617 has 2 divisors, whose sum is σ = 889808618. Its totient is φ = 889808616.

The previous prime is 889808603. The next prime is 889808629. The reversal of 889808617 is 716808988.

889808617 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., 884705536 + 5103081 = 29744^2 + 2259^2 .

It is a cyclic number.

It is not a de Polignac number, because 889808617 - 2¹⁹ = 889284329 is a prime.

It is a super-3 number, since 3×889808617³ (a number of 28 digits) contains 333 as substring.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (889800617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444904308 + 444904309.

It is an arithmetic number, because the mean of its divisors is an integer number (444904309).

Almost surely, 2^889808617 is an apocalyptic number.

It is an amenable number.

889808617 is a deficient number, since it is larger than the sum of its proper divisors (1).

889808617 is an equidigital number, since it uses as much as digits as its factorization.

889808617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 55.

The square root of 889808617 is about 29829.6600215289. The cubic root of 889808617 is about 961.8312185974.

The spelling of 889808617 in words is "eight hundred eighty-nine million, eight hundred eight thousand, six hundred seventeen".