79816853 has 16 divisors (see below), whose sum is σ = 90440640. Its totient is φ = 69984000.

The previous prime is 79816783. The next prime is 79816861. The reversal of 79816853 is 35861897.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 79816853 - 2¹⁰ = 79815829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 79816798 and 79816807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79816883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17678 + ... + 21728.

It is an arithmetic number, because the mean of its divisors is an integer number (5652540).

Almost surely, 2^79816853 is an apocalyptic number.

It is an amenable number.

79816853 is a deficient number, since it is larger than the sum of its proper divisors (10623787).

79816853 is a wasteful number, since it uses less digits than its factorization.

79816853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148.

The product of its digits is 362880, while the sum is 47.

The square root of 79816853 is about 8934.0278150451. The cubic root of 79816853 is about 430.5578715553.

The spelling of 79816853 in words is "seventy-nine million, eight hundred sixteen thousand, eight hundred fifty-three".