86065139 has 4 divisors (see below), whose sum is σ = 86408280. Its totient is φ = 85722000.

The previous prime is 86065123. The next prime is 86065153. The reversal of 86065139 is 93156068.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86065139 - 2⁴ = 86065123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86065739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171194 + ... + 171695.

It is an arithmetic number, because the mean of its divisors is an integer number (21602070).

Almost surely, 2^86065139 is an apocalyptic number.

86065139 is a deficient number, since it is larger than the sum of its proper divisors (343141).

86065139 is a wasteful number, since it uses less digits than its factorization.

86065139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343140.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 86065139 is about 9277.1298902193. The cubic root of 86065139 is about 441.5119114794.

The spelling of 86065139 in words is "eighty-six million, sixty-five thousand, one hundred thirty-nine".