799789849 has 4 divisors (see below), whose sum is σ = 812901220. Its totient is φ = 786678480.

The previous prime is 799789831. The next prime is 799789853. The reversal of 799789849 is 948987997.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 233111824 + 566678025 = 15268^2 + 23805^2 .

It is a cyclic number.

It is not a de Polignac number, because 799789849 - 2¹¹ = 799787801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (799789889) 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, 6555594 + ... + 6555715.

It is an arithmetic number, because the mean of its divisors is an integer number (203225305).

Almost surely, 2^799789849 is an apocalyptic number.

It is an amenable number.

799789849 is a deficient number, since it is larger than the sum of its proper divisors (13111371).

799789849 is a wasteful number, since it uses less digits than its factorization.

799789849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13111370.

The product of its digits is 82301184, while the sum is 70.

The square root of 799789849 is about 28280.5560235297. The cubic root of 799789849 is about 928.2364733926.

The spelling of 799789849 in words is "seven hundred ninety-nine million, seven hundred eighty-nine thousand, eight hundred forty-nine".