86512379 has 2 divisors, whose sum is σ = 86512380. Its totient is φ = 86512378.

The previous prime is 86512367. The next prime is 86512397. The reversal of 86512379 is 97321568.

Together with next prime (86512397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86512379 - 2⁸ = 86512123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86512399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43256189 + 43256190.

It is an arithmetic number, because the mean of its divisors is an integer number (43256190).

Almost surely, 2^86512379 is an apocalyptic number.

86512379 is a deficient number, since it is larger than the sum of its proper divisors (1).

86512379 is an equidigital number, since it uses as much as digits as its factorization.

86512379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 86512379 is about 9301.2030942239. The cubic root of 86512379 is about 442.2753670627.

The spelling of 86512379 in words is "eighty-six million, five hundred twelve thousand, three hundred seventy-nine".