79648447 has 2 divisors, whose sum is σ = 79648448. Its totient is φ = 79648446.

The previous prime is 79648433. The next prime is 79648523. The reversal of 79648447 is 74484697.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79648447 - 2⁷ = 79648319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79648447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79648847) 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, 39824223 + 39824224.

It is an arithmetic number, because the mean of its divisors is an integer number (39824224).

Almost surely, 2^79648447 is an apocalyptic number.

79648447 is a deficient number, since it is larger than the sum of its proper divisors (1).

79648447 is an equidigital number, since it uses as much as digits as its factorization.

79648447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 49.

The square root of 79648447 is about 8924.5978620888. The cubic root of 79648447 is about 430.2548462274.

The spelling of 79648447 in words is "seventy-nine million, six hundred forty-eight thousand, four hundred forty-seven".