79065986 has 4 divisors (see below), whose sum is σ = 118598982. Its totient is φ = 39532992.

The previous prime is 79065979. The next prime is 79065989. The reversal of 79065986 is 68956097.

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

It can be written as a sum of positive squares in only one way, i.e., 76020961 + 3045025 = 8719^2 + 1745^2 .

It is not an unprimeable number, because it can be changed into a prime (79065989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19766495 + ... + 19766498.

Almost surely, 2^79065986 is an apocalyptic number.

79065986 is a deficient number, since it is larger than the sum of its proper divisors (39532996).

79065986 is a wasteful number, since it uses less digits than its factorization.

79065986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39532995.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 79065986 is about 8891.9056450235. The cubic root of 79065986 is about 429.2034758680.

The spelling of 79065986 in words is "seventy-nine million, sixty-five thousand, nine hundred eighty-six".