823806941 has 2 divisors, whose sum is σ = 823806942. Its totient is φ = 823806940.

The previous prime is 823806889. The next prime is 823806983. The reversal of 823806941 is 149608328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 777852100 + 45954841 = 27890^2 + 6779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-823806941 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823806041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411903470 + 411903471.

It is an arithmetic number, because the mean of its divisors is an integer number (411903471).

Almost surely, 2^823806941 is an apocalyptic number.

It is an amenable number.

823806941 is a deficient number, since it is larger than the sum of its proper divisors (1).

823806941 is an equidigital number, since it uses as much as digits as its factorization.

823806941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 823806941 is about 28702.0372273468. The cubic root of 823806941 is about 937.4364059026.

The spelling of 823806941 in words is "eight hundred twenty-three million, eight hundred six thousand, nine hundred forty-one".