79646943 has 4 divisors (see below), whose sum is σ = 106195928. Its totient is φ = 53097960.

The previous prime is 79646939. The next prime is 79646971. The reversal of 79646943 is 34964697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34964697 = 3 ⋅11654899.

It is not a de Polignac number, because 79646943 - 2² = 79646939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79646892 and 79646901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79646143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13274488 + ... + 13274493.

It is an arithmetic number, because the mean of its divisors is an integer number (26548982).

Almost surely, 2^79646943 is an apocalyptic number.

79646943 is a deficient number, since it is larger than the sum of its proper divisors (26548985).

79646943 is a wasteful number, since it uses less digits than its factorization.

79646943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26548984.

The product of its digits is 979776, while the sum is 48.

The square root of 79646943 is about 8924.5136001913. The cubic root of 79646943 is about 430.2521380459.

It can be divided in two parts, 7964694 and 3, that added together give a palindrome (7964697).

The spelling of 79646943 in words is "seventy-nine million, six hundred forty-six thousand, nine hundred forty-three".