79220797 has 8 divisors (see below), whose sum is σ = 80281080. Its totient is φ = 78167040.

The previous prime is 79220789. The next prime is 79220831. The reversal of 79220797 is 79702297.

It can be written as a sum of positive squares in 4 ways, for example, as 12292036 + 66928761 = 3506^2 + 8181^2 .

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 79220797 - 2³ = 79220789 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 (79220707) 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, 25779 + ... + 28687.

It is an arithmetic number, because the mean of its divisors is an integer number (10035135).

Almost surely, 2^79220797 is an apocalyptic number.

It is an amenable number.

79220797 is a deficient number, since it is larger than the sum of its proper divisors (1060283).

79220797 is a wasteful number, since it uses less digits than its factorization.

79220797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 79220797 is about 8900.6065523648. The cubic root of 79220797 is about 429.4834196766.

The spelling of 79220797 in words is "seventy-nine million, two hundred twenty thousand, seven hundred ninety-seven".