799338821 has 4 divisors (see below), whose sum is σ = 805089600. Its totient is φ = 793588044.

The previous prime is 799338791. The next prime is 799338833. The reversal of 799338821 is 128833997.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 799338821 - 2¹⁴ = 799322437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 799338821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799338871) 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, 2875181 + ... + 2875458.

It is an arithmetic number, because the mean of its divisors is an integer number (201272400).

Almost surely, 2^799338821 is an apocalyptic number.

It is an amenable number.

799338821 is a deficient number, since it is larger than the sum of its proper divisors (5750779).

799338821 is a wasteful number, since it uses less digits than its factorization.

799338821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5750778.

The product of its digits is 653184, while the sum is 50.

The square root of 799338821 is about 28272.5807276237. The cubic root of 799338821 is about 928.0619528132.

The spelling of 799338821 in words is "seven hundred ninety-nine million, three hundred thirty-eight thousand, eight hundred twenty-one".