998994 has 16 divisors (see below), whose sum is σ = 2011968. Its totient is φ = 330672.

The previous prime is 998989. The next prime is 999007. The reversal of 998994 is 499899.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998994.

It is an unprimeable number.

998994 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504 + ... + 1500.

It is an arithmetic number, because the mean of its divisors is an integer number (125748).

2⁹⁹⁸⁹⁹⁴ is an apocalyptic number.

998994 is an abundant number, since it is smaller than the sum of its proper divisors (1012974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998994 is a wasteful number, since it uses less digits than its factorization.

998994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169.

The product of its digits is 209952, while the sum is 48.

The square root of 998994 is about 999.4968734318. The cubic root of 998994 is about 99.9664554155.

The spelling of 998994 in words is "nine hundred ninety-eight thousand, nine hundred ninety-four".