9994200823 has 2 divisors, whose sum is σ = 9994200824. Its totient is φ = 9994200822.

The previous prime is 9994200791. The next prime is 9994200863. The reversal of 9994200823 is 3280024999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9994200823 - 2⁵ = 9994200791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9994200863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4997100411 + 4997100412.

It is an arithmetic number, because the mean of its divisors is an integer number (4997100412).

Almost surely, 2^9994200823 is an apocalyptic number.

9994200823 is a deficient number, since it is larger than the sum of its proper divisors (1).

9994200823 is an equidigital number, since it uses as much as digits as its factorization.

9994200823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 9994200823 is about 99970.9999099739. Note that the first 4 decimals coincide. The cubic root of 9994200823 is about 2154.0181445641.

The spelling of 9994200823 in words is "nine billion, nine hundred ninety-four million, two hundred thousand, eight hundred twenty-three".