79663847 has 2 divisors, whose sum is σ = 79663848. Its totient is φ = 79663846.

The previous prime is 79663817. The next prime is 79663867. The reversal of 79663847 is 74836697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79663847 - 2¹² = 79659751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79663795 and 79663804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79663817) 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, 39831923 + 39831924.

It is an arithmetic number, because the mean of its divisors is an integer number (39831924).

Almost surely, 2^79663847 is an apocalyptic number.

79663847 is a deficient number, since it is larger than the sum of its proper divisors (1).

79663847 is an equidigital number, since it uses as much as digits as its factorization.

79663847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 50.

The square root of 79663847 is about 8925.4606043610. The cubic root of 79663847 is about 430.2825743162.

The spelling of 79663847 in words is "seventy-nine million, six hundred sixty-three thousand, eight hundred forty-seven".