999774343 has 2 divisors, whose sum is σ = 999774344. Its totient is φ = 999774342.

The previous prime is 999774329. The next prime is 999774389. The reversal of 999774343 is 343477999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999774343 - 2⁵ = 999774311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999274343) 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, 499887171 + 499887172.

It is an arithmetic number, because the mean of its divisors is an integer number (499887172).

Almost surely, 2^999774343 is an apocalyptic number.

999774343 is a deficient number, since it is larger than the sum of its proper divisors (1).

999774343 is an equidigital number, since it uses as much as digits as its factorization.

999774343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 55.

The square root of 999774343 is about 31619.2084499280. The cubic root of 999774343 is about 999.9247753414.

The spelling of 999774343 in words is "nine hundred ninety-nine million, seven hundred seventy-four thousand, three hundred forty-three".