86328139 has 2 divisors, whose sum is σ = 86328140. Its totient is φ = 86328138.

The previous prime is 86328127. The next prime is 86328161. The reversal of 86328139 is 93182368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86328139 - 2²¹ = 84230987 is a prime.

It is not a weakly prime, because it can be changed into another prime (86328199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43164069 + 43164070.

It is an arithmetic number, because the mean of its divisors is an integer number (43164070).

Almost surely, 2^86328139 is an apocalyptic number.

86328139 is a deficient number, since it is larger than the sum of its proper divisors (1).

86328139 is an equidigital number, since it uses as much as digits as its factorization.

86328139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 86328139 is about 9291.2937204676. The cubic root of 86328139 is about 441.9611818656.

The spelling of 86328139 in words is "eighty-six million, three hundred twenty-eight thousand, one hundred thirty-nine".