86286809 has 16 divisors (see below), whose sum is σ = 105770880. Its totient is φ = 68739840.

The previous prime is 86286799. The next prime is 86286817. The reversal of 86286809 is 90868268.

It is a cyclic number.

It is not a de Polignac number, because 86286809 - 2⁴ = 86286793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86286829) 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, 929 + ... + 13169.

It is an arithmetic number, because the mean of its divisors is an integer number (6610680).

Almost surely, 2^86286809 is an apocalyptic number.

It is an amenable number.

86286809 is a deficient number, since it is larger than the sum of its proper divisors (19484071).

86286809 is a wasteful number, since it uses less digits than its factorization.

86286809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12320.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 86286809 is about 9289.0693290555. The cubic root of 86286809 is about 441.8906402799.

The spelling of 86286809 in words is "eighty-six million, two hundred eighty-six thousand, eight hundred nine".