999122 has 8 divisors (see below), whose sum is σ = 1502976. Its totient is φ = 498132.

The previous prime is 999101. The next prime is 999133. The reversal of 999122 is 221999.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 999122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (187872).

2⁹⁹⁹¹²² is an apocalyptic number.

999122 is a deficient number, since it is larger than the sum of its proper divisors (503854).

999122 is a wasteful number, since it uses less digits than its factorization.

999122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432.

The product of its digits is 2916, while the sum is 32.

The square root of 999122 is about 999.5609035972. The cubic root of 999122 is about 99.9707247638.

The spelling of 999122 in words is "nine hundred ninety-nine thousand, one hundred twenty-two".