920842823 has 2 divisors, whose sum is σ = 920842824. Its totient is φ = 920842822.

The previous prime is 920842781. The next prime is 920842877. The reversal of 920842823 is 328248029.

It is a weak prime.

It is an emirp because it is prime and its reverse (328248029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920842823 - 2⁸ = 920842567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920848823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460421411 + 460421412.

It is an arithmetic number, because the mean of its divisors is an integer number (460421412).

Almost surely, 2^920842823 is an apocalyptic number.

920842823 is a deficient number, since it is larger than the sum of its proper divisors (1).

920842823 is an equidigital number, since it uses as much as digits as its factorization.

920842823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 920842823 is about 30345.3921213749. The cubic root of 920842823 is about 972.8857356540.

The spelling of 920842823 in words is "nine hundred twenty million, eight hundred forty-two thousand, eight hundred twenty-three".