999994379 has 2 divisors, whose sum is σ = 999994380. Its totient is φ = 999994378.

The previous prime is 999994357. The next prime is 999994381. The reversal of 999994379 is 973499999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999994379 - 2⁸ = 999994123 is a prime.

Together with 999994381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999994309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499997189 + 499997190.

It is an arithmetic number, because the mean of its divisors is an integer number (499997190).

Almost surely, 2^999994379 is an apocalyptic number.

999994379 is a deficient number, since it is larger than the sum of its proper divisors (1).

999994379 is an equidigital number, since it uses as much as digits as its factorization.

999994379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44641044, while the sum is 68.

The square root of 999994379 is about 31622.6877257453. The cubic root of 999994379 is about 999.9981263298.

The spelling of 999994379 in words is "nine hundred ninety-nine million, nine hundred ninety-four thousand, three hundred seventy-nine".