999086659 has 2 divisors, whose sum is σ = 999086660. Its totient is φ = 999086658.

The previous prime is 999086657. The next prime is 999086717. The reversal of 999086659 is 956680999.

It is a weak prime.

It is an emirp because it is prime and its reverse (956680999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999086659 - 2¹ = 999086657 is a prime.

Together with 999086657, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 999086597 and 999086606.

It is not a weakly prime, because it can be changed into another prime (999086657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499543329 + 499543330.

It is an arithmetic number, because the mean of its divisors is an integer number (499543330).

Almost surely, 2^999086659 is an apocalyptic number.

999086659 is a deficient number, since it is larger than the sum of its proper divisors (1).

999086659 is an equidigital number, since it uses as much as digits as its factorization.

999086659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9447840, while the sum is 61.

The square root of 999086659 is about 31608.3321135425. The cubic root of 999086659 is about 999.6954602650.

The spelling of 999086659 in words is "nine hundred ninety-nine million, eighty-six thousand, six hundred fifty-nine".