85689889 has 8 divisors (see below), whose sum is σ = 87340320. Its totient is φ = 84046176.

The previous prime is 85689887. The next prime is 85689907. The reversal of 85689889 is 98898658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85689889 - 2¹ = 85689887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85689887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29469 + ... + 32245.

It is an arithmetic number, because the mean of its divisors is an integer number (10917540).

Almost surely, 2^85689889 is an apocalyptic number.

It is an amenable number.

85689889 is a deficient number, since it is larger than the sum of its proper divisors (1650431).

85689889 is a wasteful number, since it uses less digits than its factorization.

85689889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359.

The product of its digits is 9953280, while the sum is 61.

The square root of 85689889 is about 9256.8833307977. The cubic root of 85689889 is about 440.8693024047.

The spelling of 85689889 in words is "eighty-five million, six hundred eighty-nine thousand, eight hundred eighty-nine".