999002 has 8 divisors (see below), whose sum is σ = 1503156. Its totient is φ = 497952.

The previous prime is 998989. The next prime is 999007. The reversal of 999002 is 200999.

It can be written as a sum of positive squares in 2 ways, for example, as 737881 + 261121 = 859^2 + 511^2 .

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

It is not an unprimeable number, because it can be changed into a prime (999007) 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 3 ways as a sum of consecutive naturals, for example, 368 + ... + 1460.

2⁹⁹⁹⁰⁰² is an apocalyptic number.

999002 is a deficient number, since it is larger than the sum of its proper divisors (504154).

999002 is a wasteful number, since it uses less digits than its factorization.

999002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 999002 is about 999.5008754373. The cubic root of 999002 is about 99.9667222605.

It can be divided in two parts, 99 and 9002, that multiplied together give a palindrome (891198).

The spelling of 999002 in words is "nine hundred ninety-nine thousand, two".