999998822 has 32 divisors (see below), whose sum is σ = 1580817600. Its totient is φ = 473776128.

The previous prime is 999998801. The next prime is 999998843. The reversal of 999998822 is 228899999.

It is an interprime number because it is at equal distance from previous prime (999998801) and next prime (999998843).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1087679 + ... + 1088597.

It is an arithmetic number, because the mean of its divisors is an integer number (49400550).

Almost surely, 2^999998822 is an apocalyptic number.

999998822 is a deficient number, since it is larger than the sum of its proper divisors (580818778).

999998822 is a wasteful number, since it uses less digits than its factorization.

999998822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280.

The product of its digits is 15116544, while the sum is 65.

The square root of 999998822 is about 31622.7579758629. The cubic root of 999998822 is about 999.9996073332. Note that the first 3 decimals are identical.

The spelling of 999998822 in words is "nine hundred ninety-nine million, nine hundred ninety-eight thousand, eight hundred twenty-two".