999343879 has 2 divisors, whose sum is σ = 999343880. Its totient is φ = 999343878.

The previous prime is 999343871. The next prime is 999343901. The reversal of 999343879 is 978343999.

999343879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999343879 - 2³ = 999343871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999343871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499671939 + 499671940.

It is an arithmetic number, because the mean of its divisors is an integer number (499671940).

Almost surely, 2^999343879 is an apocalyptic number.

999343879 is a deficient number, since it is larger than the sum of its proper divisors (1).

999343879 is an equidigital number, since it uses as much as digits as its factorization.

999343879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13226976, while the sum is 61.

The square root of 999343879 is about 31612.4007155420. The cubic root of 999343879 is about 999.7812451498.

The spelling of 999343879 in words is "nine hundred ninety-nine million, three hundred forty-three thousand, eight hundred seventy-nine".