78982847 has 2 divisors, whose sum is σ = 78982848. Its totient is φ = 78982846.

The previous prime is 78982843. The next prime is 78982859. The reversal of 78982847 is 74828987.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78982847 - 2² = 78982843 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 (78982843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39491423 + 39491424.

It is an arithmetic number, because the mean of its divisors is an integer number (39491424).

Almost surely, 2^78982847 is an apocalyptic number.

78982847 is a deficient number, since it is larger than the sum of its proper divisors (1).

78982847 is an equidigital number, since it uses as much as digits as its factorization.

78982847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1806336, while the sum is 53.

The square root of 78982847 is about 8887.2294332936. The cubic root of 78982847 is about 429.0529852708.

The spelling of 78982847 in words is "seventy-eight million, nine hundred eighty-two thousand, eight hundred forty-seven".