999061823 has 2 divisors, whose sum is σ = 999061824. Its totient is φ = 999061822.

The previous prime is 999061783. The next prime is 999061849. The reversal of 999061823 is 328160999.

It is a strong prime.

It is an emirp because it is prime and its reverse (328160999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999061823 - 2¹² = 999057727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999061853) 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, 499530911 + 499530912.

It is an arithmetic number, because the mean of its divisors is an integer number (499530912).

Almost surely, 2^999061823 is an apocalyptic number.

999061823 is a deficient number, since it is larger than the sum of its proper divisors (1).

999061823 is an equidigital number, since it uses as much as digits as its factorization.

999061823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 999061823 is about 31607.9392400074. The cubic root of 999061823 is about 999.6871764850.

The spelling of 999061823 in words is "nine hundred ninety-nine million, sixty-one thousand, eight hundred twenty-three".