86147879 has 2 divisors, whose sum is σ = 86147880. Its totient is φ = 86147878.

The previous prime is 86147821. The next prime is 86147899. The reversal of 86147879 is 97874168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86147879 - 2⁸ = 86147623 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86147819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43073939 + 43073940.

It is an arithmetic number, because the mean of its divisors is an integer number (43073940).

Almost surely, 2^86147879 is an apocalyptic number.

86147879 is a deficient number, since it is larger than the sum of its proper divisors (1).

86147879 is an equidigital number, since it uses as much as digits as its factorization.

86147879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 50.

The square root of 86147879 is about 9281.5881722903. The cubic root of 86147879 is about 441.6533508426.

The spelling of 86147879 in words is "eighty-six million, one hundred forty-seven thousand, eight hundred seventy-nine".