78086159 has 2 divisors, whose sum is σ = 78086160. Its totient is φ = 78086158.

The previous prime is 78086149. The next prime is 78086201. The reversal of 78086159 is 95168087.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78086159 - 2¹² = 78082063 is a 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 (78086149) 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, 39043079 + 39043080.

It is an arithmetic number, because the mean of its divisors is an integer number (39043080).

Almost surely, 2^78086159 is an apocalyptic number.

78086159 is a deficient number, since it is larger than the sum of its proper divisors (1).

78086159 is an equidigital number, since it uses as much as digits as its factorization.

78086159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 78086159 is about 8836.6373129149. The cubic root of 78086159 is about 427.4231299379.

The spelling of 78086159 in words is "seventy-eight million, eighty-six thousand, one hundred fifty-nine".