79220791 has 8 divisors (see below), whose sum is σ = 85881824. Its totient is φ = 72640800.

The previous prime is 79220789. The next prime is 79220831. The reversal of 79220791 is 19702297.

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 79220791 - 2¹ = 79220789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79220791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79220891) 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 in 7 ways as a sum of consecutive naturals, for example, 18216 + ... + 22141.

It is an arithmetic number, because the mean of its divisors is an integer number (10735228).

Almost surely, 2^79220791 is an apocalyptic number.

79220791 is a deficient number, since it is larger than the sum of its proper divisors (6661033).

79220791 is a wasteful number, since it uses less digits than its factorization.

79220791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40521.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 79220791 is about 8900.6062153092. The cubic root of 79220791 is about 429.4834088339.

The spelling of 79220791 in words is "seventy-nine million, two hundred twenty thousand, seven hundred ninety-one".