85864149 has 24 divisors (see below), whose sum is σ = 144074112. Its totient is φ = 48258720.

The previous prime is 85864147. The next prime is 85864151. The reversal of 85864149 is 94146858.

It is an interprime number because it is at equal distance from previous prime (85864147) and next prime (85864151).

It is not a de Polignac number, because 85864149 - 2¹ = 85864147 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85864147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7329 + ... + 15014.

It is an arithmetic number, because the mean of its divisors is an integer number (6003088).

Almost surely, 2^85864149 is an apocalyptic number.

It is an amenable number.

85864149 is a deficient number, since it is larger than the sum of its proper divisors (58209963).

85864149 is a wasteful number, since it uses less digits than its factorization.

85864149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22417 (or 22414 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 85864149 is about 9266.2910055750. The cubic root of 85864149 is about 441.1679524410.

The spelling of 85864149 in words is "eighty-five million, eight hundred sixty-four thousand, one hundred forty-nine".