86689848979 has 2 divisors, whose sum is σ = 86689848980. Its totient is φ = 86689848978.

The previous prime is 86689848901. The next prime is 86689849003. The reversal of 86689848979 is 97984898668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86689848979 - 2¹⁹ = 86689324691 is a prime.

It is not a weakly prime, because it can be changed into another prime (86689848379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43344924489 + 43344924490.

It is an arithmetic number, because the mean of its divisors is an integer number (43344924490).

Almost surely, 2^86689848979 is an apocalyptic number.

86689848979 is a deficient number, since it is larger than the sum of its proper divisors (1).

86689848979 is an equidigital number, since it uses as much as digits as its factorization.

86689848979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3009871872, while the sum is 82.

The spelling of 86689848979 in words is "eighty-six billion, six hundred eighty-nine million, eight hundred forty-eight thousand, nine hundred seventy-nine".