966405823 has 2 divisors, whose sum is σ = 966405824. Its totient is φ = 966405822.

The previous prime is 966405751. The next prime is 966405857. The reversal of 966405823 is 328504669.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 966405823 - 2²¹ = 964308671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 966405823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966405893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483202911 + 483202912.

It is an arithmetic number, because the mean of its divisors is an integer number (483202912).

Almost surely, 2^966405823 is an apocalyptic number.

966405823 is a deficient number, since it is larger than the sum of its proper divisors (1).

966405823 is an equidigital number, since it uses as much as digits as its factorization.

966405823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 966405823 is about 31087.0684208080. The cubic root of 966405823 is about 988.6741504049.

The spelling of 966405823 in words is "nine hundred sixty-six million, four hundred five thousand, eight hundred twenty-three".