999994843 has 2 divisors, whose sum is σ = 999994844. Its totient is φ = 999994842.

The previous prime is 999994837. The next prime is 999994861. The reversal of 999994843 is 348499999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999994843 - 2¹³ = 999986651 is a prime.

It is not a weakly prime, because it can be changed into another prime (999994813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499997421 + 499997422.

It is an arithmetic number, because the mean of its divisors is an integer number (499997422).

Almost surely, 2^999994843 is an apocalyptic number.

999994843 is a deficient number, since it is larger than the sum of its proper divisors (1).

999994843 is an equidigital number, since it uses as much as digits as its factorization.

999994843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22674816, while the sum is 64.

The square root of 999994843 is about 31622.6950622492. The cubic root of 999994843 is about 999.9982809970.

The spelling of 999994843 in words is "nine hundred ninety-nine million, nine hundred ninety-four thousand, eight hundred forty-three".