858898669 has 2 divisors, whose sum is σ = 858898670. Its totient is φ = 858898668.

The previous prime is 858898639. The next prime is 858898673. The reversal of 858898669 is 966898858.

858898669 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., 654694569 + 204204100 = 25587^2 + 14290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-858898669 is a prime.

It is a super-2 number, since 2×858898669² = 1475413847219943122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858898619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429449334 + 429449335.

It is an arithmetic number, because the mean of its divisors is an integer number (429449335).

Almost surely, 2^858898669 is an apocalyptic number.

It is an amenable number.

858898669 is a deficient number, since it is larger than the sum of its proper divisors (1).

858898669 is an equidigital number, since it uses as much as digits as its factorization.

858898669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59719680, while the sum is 67.

The square root of 858898669 is about 29306.9730439703. The cubic root of 858898669 is about 950.5624255966.

The spelling of 858898669 in words is "eight hundred fifty-eight million, eight hundred ninety-eight thousand, six hundred sixty-nine".