79928867 has 2 divisors, whose sum is σ = 79928868. Its totient is φ = 79928866.

The previous prime is 79928861. The next prime is 79928869. The reversal of 79928867 is 76882997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79928867 - 2¹⁰ = 79927843 is a prime.

Together with 79928869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79928861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39964433 + 39964434.

It is an arithmetic number, because the mean of its divisors is an integer number (39964434).

Almost surely, 2^79928867 is an apocalyptic number.

79928867 is a deficient number, since it is larger than the sum of its proper divisors (1).

79928867 is an equidigital number, since it uses as much as digits as its factorization.

79928867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 56.

The square root of 79928867 is about 8940.2945700911. The cubic root of 79928867 is about 430.7591906338.

The spelling of 79928867 in words is "seventy-nine million, nine hundred twenty-eight thousand, eight hundred sixty-seven".