998012 has 6 divisors (see below), whose sum is σ = 1746528. Its totient is φ = 499004.

The previous prime is 998009. The next prime is 998017. The reversal of 998012 is 210899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998017) 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 as a sum of consecutive naturals, namely, 124748 + ... + 124755.

It is an arithmetic number, because the mean of its divisors is an integer number (291088).

2⁹⁹⁸⁰¹² is an apocalyptic number.

It is an amenable number.

998012 is a deficient number, since it is larger than the sum of its proper divisors (748516).

998012 is a wasteful number, since it uses less digits than its factorization.

998012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249507 (or 249505 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 998012 is about 999.0055054903. The cubic root of 998012 is about 99.9336893721.

The spelling of 998012 in words is "nine hundred ninety-eight thousand, twelve".