79488866 has 4 divisors (see below), whose sum is σ = 119233302. Its totient is φ = 39744432.

The previous prime is 79488859. The next prime is 79488869. The reversal of 79488866 is 66888497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66888497 = 13 ⋅5145269.

It can be written as a sum of positive squares in only one way, i.e., 77070841 + 2418025 = 8779^2 + 1555^2 .

It is not an unprimeable number, because it can be changed into a prime (79488869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19872215 + ... + 19872218.

Almost surely, 2^79488866 is an apocalyptic number.

79488866 is a deficient number, since it is larger than the sum of its proper divisors (39744436).

79488866 is a wasteful number, since it uses less digits than its factorization.

79488866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39744435.

The product of its digits is 4644864, while the sum is 56.

The square root of 79488866 is about 8915.6528644850. The cubic root of 79488866 is about 429.9673059693.

The spelling of 79488866 in words is "seventy-nine million, four hundred eighty-eight thousand, eight hundred sixty-six".