79279793 has 4 divisors (see below), whose sum is σ = 79334388. Its totient is φ = 79225200.

The previous prime is 79279751. The next prime is 79279801. The reversal of 79279793 is 39797297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39797297 = 47 ⋅846751.

It can be written as a sum of positive squares in 2 ways, for example, as 68442529 + 10837264 = 8273^2 + 3292^2 .

It is a cyclic number.

It is not a de Polignac number, because 79279793 - 2²⁰ = 78231217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79279703) 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, 25058 + ... + 28043.

It is an arithmetic number, because the mean of its divisors is an integer number (19833597).

Almost surely, 2^79279793 is an apocalyptic number.

It is an amenable number.

79279793 is a deficient number, since it is larger than the sum of its proper divisors (54595).

79279793 is a wasteful number, since it uses less digits than its factorization.

79279793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54594.

The product of its digits is 1500282, while the sum is 53.

The square root of 79279793 is about 8903.9200917349. The cubic root of 79279793 is about 429.5900058159.

The spelling of 79279793 in words is "seventy-nine million, two hundred seventy-nine thousand, seven hundred ninety-three".