79220773 has 4 divisors (see below), whose sum is σ = 80037580. Its totient is φ = 78403968.

The previous prime is 79220759. The next prime is 79220789. The reversal of 79220773 is 37702297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37702297 = 37 ⋅1018981.

It can be written as a sum of positive squares in 2 ways, for example, as 58262689 + 20958084 = 7633^2 + 4578^2 .

It is a cyclic number.

It is not a de Polignac number, because 79220773 - 2¹⁷ = 79089701 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 (79223773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408258 + ... + 408451.

It is an arithmetic number, because the mean of its divisors is an integer number (20009395).

Almost surely, 2^79220773 is an apocalyptic number.

It is an amenable number.

79220773 is a deficient number, since it is larger than the sum of its proper divisors (816807).

79220773 is an equidigital number, since it uses as much as digits as its factorization.

79220773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816806.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 79220773 is about 8900.6052041420. The cubic root of 79220773 is about 429.4833763058.

The spelling of 79220773 in words is "seventy-nine million, two hundred twenty thousand, seven hundred seventy-three".