79986773 has 4 divisors (see below), whose sum is σ = 80154240. Its totient is φ = 79819308.

The previous prime is 79986769. The next prime is 79986787. The reversal of 79986773 is 37768997.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37768997 = 7 ⋅5395571.

It is a cyclic number.

It is not a de Polignac number, because 79986773 - 2² = 79986769 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 (79986733) 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, 83015 + ... + 83972.

It is an arithmetic number, because the mean of its divisors is an integer number (20038560).

Almost surely, 2^79986773 is an apocalyptic number.

It is an amenable number.

79986773 is a deficient number, since it is larger than the sum of its proper divisors (167467).

79986773 is a wasteful number, since it uses less digits than its factorization.

79986773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167466.

The product of its digits is 4000752, while the sum is 56.

The square root of 79986773 is about 8943.5324676550. The cubic root of 79986773 is about 430.8631894411.

The spelling of 79986773 in words is "seventy-nine million, nine hundred eighty-six thousand, seven hundred seventy-three".