85858289 has 16 divisors (see below), whose sum is σ = 96121536. Its totient is φ = 76032000.

The previous prime is 85858261. The next prime is 85858301. The reversal of 85858289 is 98285858.

It is a happy number.

It is not a de Polignac number, because 85858289 - 2¹⁶ = 85792753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85858289.

It is not an unprimeable number, because it can be changed into a prime (85858219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70889 + ... + 72089.

It is an arithmetic number, because the mean of its divisors is an integer number (6007596).

Almost surely, 2^85858289 is an apocalyptic number.

It is an amenable number.

85858289 is a deficient number, since it is larger than the sum of its proper divisors (10263247).

85858289 is a wasteful number, since it uses less digits than its factorization.

85858289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its digits is 1843200, while the sum is 53.

The square root of 85858289 is about 9265.9748003111. The cubic root of 85858289 is about 441.1579160326.

The spelling of 85858289 in words is "eighty-five million, eight hundred fifty-eight thousand, two hundred eighty-nine".