79275391 has 8 divisors (see below), whose sum is σ = 89867120. Its totient is φ = 69325632.

The previous prime is 79275379. The next prime is 79275397. The reversal of 79275391 is 19357297.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79275391 - 2⁹ = 79274879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79275397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160230 + ... + 160723.

It is an arithmetic number, because the mean of its divisors is an integer number (11233390).

Almost surely, 2^79275391 is an apocalyptic number.

79275391 is a deficient number, since it is larger than the sum of its proper divisors (10591729).

79275391 is a wasteful number, since it uses less digits than its factorization.

79275391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320985.

The product of its digits is 119070, while the sum is 43.

The square root of 79275391 is about 8903.6728938119. The cubic root of 79275391 is about 429.5820546927.

The spelling of 79275391 in words is "seventy-nine million, two hundred seventy-five thousand, three hundred ninety-one".