79091867 has 2 divisors, whose sum is σ = 79091868. Its totient is φ = 79091866.

The previous prime is 79091863. The next prime is 79091893. The reversal of 79091867 is 76819097.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79091867 - 2² = 79091863 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79091861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39545933 + 39545934.

It is an arithmetic number, because the mean of its divisors is an integer number (39545934).

Almost surely, 2^79091867 is an apocalyptic number.

79091867 is a deficient number, since it is larger than the sum of its proper divisors (1).

79091867 is an equidigital number, since it uses as much as digits as its factorization.

79091867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 79091867 is about 8893.3608382883. The cubic root of 79091867 is about 429.2503017489.

The spelling of 79091867 in words is "seventy-nine million, ninety-one thousand, eight hundred sixty-seven".