999381793 has 2 divisors, whose sum is σ = 999381794. Its totient is φ = 999381792.

The previous prime is 999381701. The next prime is 999381797. The reversal of 999381793 is 397183999.

999381793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 997801744 + 1580049 = 31588^2 + 1257^2 .

It is a cyclic number.

It is not a de Polignac number, because 999381793 - 2⁹ = 999381281 is a prime.

It is not a weakly prime, because it can be changed into another prime (999381797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499690896 + 499690897.

It is an arithmetic number, because the mean of its divisors is an integer number (499690897).

Almost surely, 2^999381793 is an apocalyptic number.

It is an amenable number.

999381793 is a deficient number, since it is larger than the sum of its proper divisors (1).

999381793 is an equidigital number, since it uses as much as digits as its factorization.

999381793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3306744, while the sum is 58.

The square root of 999381793 is about 31613.0003795907. Note that the first 3 decimals coincide. The cubic root of 999381793 is about 999.7938885210.

The spelling of 999381793 in words is "nine hundred ninety-nine million, three hundred eighty-one thousand, seven hundred ninety-three".