822115793 has 4 divisors (see below), whose sum is σ = 829391268. Its totient is φ = 814840320.

The previous prime is 822115787. The next prime is 822115813. The reversal of 822115793 is 397511228.

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 111999889 + 710115904 = 10583^2 + 26648^2 .

It is a cyclic number.

It is not a de Polignac number, because 822115793 - 2¹⁴ = 822099409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (822115093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3637568 + ... + 3637793.

It is an arithmetic number, because the mean of its divisors is an integer number (207347817).

Almost surely, 2^822115793 is an apocalyptic number.

It is an amenable number.

822115793 is a deficient number, since it is larger than the sum of its proper divisors (7275475).

822115793 is a wasteful number, since it uses less digits than its factorization.

822115793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7275474.

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

The square root of 822115793 is about 28672.5616748835. The cubic root of 822115793 is about 936.7944958932.

The spelling of 822115793 in words is "eight hundred twenty-two million, one hundred fifteen thousand, seven hundred ninety-three".