79797773 has 4 divisors (see below), whose sum is σ = 87052128. Its totient is φ = 72543420.

The previous prime is 79797769. The next prime is 79797829. The reversal of 79797773 is 37779797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79797773 - 2² = 79797769 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 (79797703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3627161 + ... + 3627182.

It is an arithmetic number, because the mean of its divisors is an integer number (21763032).

Almost surely, 2^79797773 is an apocalyptic number.

It is an amenable number.

79797773 is a deficient number, since it is larger than the sum of its proper divisors (7254355).

79797773 is a wasteful number, since it uses less digits than its factorization.

79797773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7254354.

The product of its digits is 4084101, while the sum is 56.

The square root of 79797773 is about 8932.9599237879. The cubic root of 79797773 is about 430.5235609280.

The spelling of 79797773 in words is "seventy-nine million, seven hundred ninety-seven thousand, seven hundred seventy-three".