999366 has 8 divisors (see below), whose sum is σ = 1998744. Its totient is φ = 333120.

The previous prime is 999359. The next prime is 999371. The reversal of 999366 is 663999.

It is a sphenic number, since it is the product of 3 distinct primes.

999366 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 999366.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83275 + ... + 83286.

It is an arithmetic number, because the mean of its divisors is an integer number (249843).

2⁹⁹⁹³⁶⁶ is an apocalyptic number.

999366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999366 is a wasteful number, since it uses less digits than its factorization.

999366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166566.

The product of its digits is 78732, while the sum is 42.

The square root of 999366 is about 999.6829497396. The cubic root of 999366 is about 99.9788621989.

The spelling of 999366 in words is "nine hundred ninety-nine thousand, three hundred sixty-six".