86243885 has 16 divisors (see below), whose sum is σ = 127376256. Its totient is φ = 54589248.

The previous prime is 86243863. The next prime is 86243887. The reversal of 86243885 is 58834268.

It is not a de Polignac number, because 86243885 - 2¹⁰ = 86242861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86243887) 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, 94319 + ... + 95228.

It is an arithmetic number, because the mean of its divisors is an integer number (7961016).

Almost surely, 2^86243885 is an apocalyptic number.

It is an amenable number.

86243885 is a deficient number, since it is larger than the sum of its proper divisors (41132371).

86243885 is a wasteful number, since it uses less digits than its factorization.

86243885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189572.

The product of its digits is 368640, while the sum is 44.

The square root of 86243885 is about 9286.7585841347. The cubic root of 86243885 is about 441.8173542233.

The spelling of 86243885 in words is "eighty-six million, two hundred forty-three thousand, eight hundred eighty-five".