795123821 has 4 divisors (see below), whose sum is σ = 816613692. Its totient is φ = 773633952.

The previous prime is 795123787. The next prime is 795123839. The reversal of 795123821 is 128321597.

795123821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 698809225 + 96314596 = 26435^2 + 9814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-795123821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (795123851) 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, 10744880 + ... + 10744953.

It is an arithmetic number, because the mean of its divisors is an integer number (204153423).

Almost surely, 2^795123821 is an apocalyptic number.

It is an amenable number.

795123821 is a deficient number, since it is larger than the sum of its proper divisors (21489871).

795123821 is a wasteful number, since it uses less digits than its factorization.

795123821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21489870.

The product of its digits is 30240, while the sum is 38.

The square root of 795123821 is about 28197.9400134123. The cubic root of 795123821 is about 926.4278201233.

The spelling of 795123821 in words is "seven hundred ninety-five million, one hundred twenty-three thousand, eight hundred twenty-one".