79442866 has 8 divisors (see below), whose sum is σ = 121412844. Its totient is φ = 38971920.

The previous prime is 79442833. The next prime is 79442879. The reversal of 79442866 is 66824497.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78694641 + 748225 = 8871^2 + 865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×79442866² = 12622337916587912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374625 + ... + 374836.

Almost surely, 2^79442866 is an apocalyptic number.

79442866 is a deficient number, since it is larger than the sum of its proper divisors (41969978).

79442866 is a wasteful number, since it uses less digits than its factorization.

79442866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749516.

The product of its digits is 580608, while the sum is 46.

The square root of 79442866 is about 8913.0727585945. The cubic root of 79442866 is about 429.8843496445.

It can be divided in two parts, 79442 and 866, that added together give a palindrome (80308).

The spelling of 79442866 in words is "seventy-nine million, four hundred forty-two thousand, eight hundred sixty-six".