86078849 has 2 divisors, whose sum is σ = 86078850. Its totient is φ = 86078848.

The previous prime is 86078831. The next prime is 86078897. The reversal of 86078849 is 94887068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51739249 + 34339600 = 7193^2 + 5860^2 .

It is a cyclic number.

It is not a de Polignac number, because 86078849 - 2⁸ = 86078593 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86078797 and 86078806.

It is not a weakly prime, because it can be changed into another prime (86078149) 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, 43039424 + 43039425.

It is an arithmetic number, because the mean of its divisors is an integer number (43039425).

Almost surely, 2^86078849 is an apocalyptic number.

It is an amenable number.

86078849 is a deficient number, since it is larger than the sum of its proper divisors (1).

86078849 is an equidigital number, since it uses as much as digits as its factorization.

86078849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 86078849 is about 9277.8687746702. The cubic root of 86078849 is about 441.5353542151.

The spelling of 86078849 in words is "eighty-six million, seventy-eight thousand, eight hundred forty-nine".