79679443 has 4 divisors (see below), whose sum is σ = 82427040. Its totient is φ = 76931848.

The previous prime is 79679437. The next prime is 79679447. The reversal of 79679443 is 34497697.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79679443 is a prime.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (79679447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373755 + ... + 1373812.

It is an arithmetic number, because the mean of its divisors is an integer number (20606760).

Almost surely, 2^79679443 is an apocalyptic number.

79679443 is a deficient number, since it is larger than the sum of its proper divisors (2747597).

79679443 is a wasteful number, since it uses less digits than its factorization.

79679443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747596.

The product of its digits is 1143072, while the sum is 49.

The square root of 79679443 is about 8926.3342420055. The cubic root of 79679443 is about 430.3106516663.

The spelling of 79679443 in words is "seventy-nine million, six hundred seventy-nine thousand, four hundred forty-three".