79968447 has 24 divisors (see below), whose sum is σ = 129808224. Its totient is φ = 47070144.

The previous prime is 79968443. The next prime is 79968463. The reversal of 79968447 is 74486997.

It is a happy number.

It is not a de Polignac number, because 79968447 - 2² = 79968443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79968393 and 79968402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79968443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12168 + ... + 17549.

It is an arithmetic number, because the mean of its divisors is an integer number (5408676).

Almost surely, 2^79968447 is an apocalyptic number.

79968447 is a deficient number, since it is larger than the sum of its proper divisors (49839777).

79968447 is a wasteful number, since it uses less digits than its factorization.

79968447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29759 (or 29756 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 79968447 is about 8942.5078697198. The cubic root of 79968447 is about 430.8302814922.

The spelling of 79968447 in words is "seventy-nine million, nine hundred sixty-eight thousand, four hundred forty-seven".