999000659 has 2 divisors, whose sum is σ = 999000660. Its totient is φ = 999000658.

The previous prime is 999000643. The next prime is 999000701. The reversal of 999000659 is 956000999.

It is a weak prime.

It is an emirp because it is prime and its reverse (956000999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999000659 - 2⁴ = 999000643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999002659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499500329 + 499500330.

It is an arithmetic number, because the mean of its divisors is an integer number (499500330).

Almost surely, 2^999000659 is an apocalyptic number.

999000659 is a deficient number, since it is larger than the sum of its proper divisors (1).

999000659 is an equidigital number, since it uses as much as digits as its factorization.

999000659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 47.

The square root of 999000659 is about 31606.9716834752. The cubic root of 999000659 is about 999.6667753070. Note that the first 3 decimals are identical.

The spelling of 999000659 in words is "nine hundred ninety-nine million, six hundred fifty-nine", and thus it is an aban number.