999224 has 32 divisors (see below), whose sum is σ = 1998000. Its totient is φ = 467712.

The previous prime is 999221. The next prime is 999233. The reversal of 999224 is 422999.

It is a zygodrome in base 2 and base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13652 + ... + 13724.

2⁹⁹⁹²²⁴ is an apocalyptic number.

It is an amenable number.

999224 is a deficient number, since it is larger than the sum of its proper divisors (998776).

999224 is a wasteful number, since it uses less digits than its factorization.

999224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 163 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 999224 is about 999.6119246988. The cubic root of 999224 is about 99.9741266396.

The spelling of 999224 in words is "nine hundred ninety-nine thousand, two hundred twenty-four".