79080091 has 2 divisors, whose sum is σ = 79080092. Its totient is φ = 79080090.

The previous prime is 79080077. The next prime is 79080191. The reversal of 79080091 is 19008097.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79080091 - 2⁹ = 79079579 is a prime.

It is not a weakly prime, because it can be changed into another prime (79080031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39540045 + 39540046.

It is an arithmetic number, because the mean of its divisors is an integer number (39540046).

Almost surely, 2^79080091 is an apocalyptic number.

79080091 is a deficient number, since it is larger than the sum of its proper divisors (1).

79080091 is an equidigital number, since it uses as much as digits as its factorization.

79080091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 79080091 is about 8892.6987467248. The cubic root of 79080091 is about 429.2289969775.

The spelling of 79080091 in words is "seventy-nine million, eighty thousand, ninety-one".