79797853 has 4 divisors (see below), whose sum is σ = 83997760. Its totient is φ = 75597948.

The previous prime is 79797829. The next prime is 79797859. The reversal of 79797853 is 35879797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35879797 = 41 ⋅875117.

It is a cyclic number.

It is not a de Polignac number, because 79797853 - 2¹⁷ = 79666781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79797794 and 79797803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79797859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2099925 + ... + 2099962.

It is an arithmetic number, because the mean of its divisors is an integer number (20999440).

Almost surely, 2^79797853 is an apocalyptic number.

It is an amenable number.

79797853 is a deficient number, since it is larger than the sum of its proper divisors (4199907).

79797853 is a wasteful number, since it uses less digits than its factorization.

79797853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199906.

The product of its digits is 3333960, while the sum is 55.

The square root of 79797853 is about 8932.9644015858. The cubic root of 79797853 is about 430.5237047995.

The spelling of 79797853 in words is "seventy-nine million, seven hundred ninety-seven thousand, eight hundred fifty-three".