998492 has 18 divisors (see below), whose sum is σ = 1921584. Its totient is φ = 453640.

The previous prime is 998471. The next prime is 998497. The reversal of 998492 is 294899.

It is an Ulam number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 548 + ... + 1515.

2⁹⁹⁸⁴⁹² is an apocalyptic number.

It is an amenable number.

998492 is a deficient number, since it is larger than the sum of its proper divisors (923092).

998492 is a wasteful number, since it uses less digits than its factorization.

998492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2076 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 998492 is about 999.2457155275. The cubic root of 998492 is about 99.9497080448.

The spelling of 998492 in words is "nine hundred ninety-eight thousand, four hundred ninety-two".