85889287 has 8 divisors (see below), whose sum is σ = 99209232. Its totient is φ = 73488000.

The previous prime is 85889261. The next prime is 85889311. The reversal of 85889287 is 78298858.

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 85889287 - 2¹⁹ = 85364999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85889887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229464 + ... + 229837.

It is an arithmetic number, because the mean of its divisors is an integer number (12401154).

Almost surely, 2^85889287 is an apocalyptic number.

85889287 is a deficient number, since it is larger than the sum of its proper divisors (13319945).

85889287 is a wasteful number, since it uses less digits than its factorization.

85889287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459329.

The product of its digits is 2580480, while the sum is 55.

The square root of 85889287 is about 9267.6473282058. The cubic root of 85889287 is about 441.2110010553.

The spelling of 85889287 in words is "eighty-five million, eight hundred eighty-nine thousand, two hundred eighty-seven".