79906847 has 2 divisors, whose sum is σ = 79906848. Its totient is φ = 79906846.

The previous prime is 79906843. The next prime is 79906859. The reversal of 79906847 is 74860997.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79906847 - 2² = 79906843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79906795 and 79906804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79906843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39953423 + 39953424.

It is an arithmetic number, because the mean of its divisors is an integer number (39953424).

Almost surely, 2^79906847 is an apocalyptic number.

79906847 is a deficient number, since it is larger than the sum of its proper divisors (1).

79906847 is an equidigital number, since it uses as much as digits as its factorization.

79906847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 79906847 is about 8939.0629822146. The cubic root of 79906847 is about 430.7196296720.

The spelling of 79906847 in words is "seventy-nine million, nine hundred six thousand, eight hundred forty-seven".