999000822 has 8 divisors (see below), whose sum is σ = 1998001656. Its totient is φ = 333000272.

The previous prime is 999000817. The next prime is 999000841. The reversal of 999000822 is 228000999.

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

999000822 is an admirable number.

It is a congruent number.

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, 83250063 + ... + 83250074.

It is an arithmetic number, because the mean of its divisors is an integer number (249750207).

Almost surely, 2^999000822 is an apocalyptic number.

999000822 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.

999000822 is a wasteful number, since it uses less digits than its factorization.

999000822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166500142.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 999000822 is about 31606.9742620201. The cubic root of 999000822 is about 999.6668296765. Note that the first 3 decimals are identical.

The spelling of 999000822 in words is "nine hundred ninety-nine million, eight hundred twenty-two", and thus it is an aban number.