79282813 has 4 divisors (see below), whose sum is σ = 79306560. Its totient is φ = 79259068.

The previous prime is 79282799. The next prime is 79282829. The reversal of 79282813 is 31828297.

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 79282813 - 2²⁵ = 45728381 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79252813) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5845 + ... + 13882.

It is an arithmetic number, because the mean of its divisors is an integer number (19826640).

Almost surely, 2^79282813 is an apocalyptic number.

It is an amenable number.

79282813 is a deficient number, since it is larger than the sum of its proper divisors (23747).

79282813 is a wasteful number, since it uses less digits than its factorization.

79282813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23746.

The product of its digits is 48384, while the sum is 40.

The square root of 79282813 is about 8904.0896783444. The cubic root of 79282813 is about 429.5954605280.

The spelling of 79282813 in words is "seventy-nine million, two hundred eighty-two thousand, eight hundred thirteen".