79918843 has 4 divisors (see below), whose sum is σ = 79942600. Its totient is φ = 79895088.

The previous prime is 79918831. The next prime is 79918871. The reversal of 79918843 is 34881997.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 79918843 - 2⁹ = 79918331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79918543) 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, 5793 + ... + 13906.

It is an arithmetic number, because the mean of its divisors is an integer number (19985650).

Almost surely, 2^79918843 is an apocalyptic number.

79918843 is a deficient number, since it is larger than the sum of its proper divisors (23757).

79918843 is a wasteful number, since it uses less digits than its factorization.

79918843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23756.

The product of its digits is 435456, while the sum is 49.

The square root of 79918843 is about 8939.7339445869. The cubic root of 79918843 is about 430.7411824940.

The spelling of 79918843 in words is "seventy-nine million, nine hundred eighteen thousand, eight hundred forty-three".