998850 has 24 divisors (see below), whose sum is σ = 2477520. Its totient is φ = 266320.

The previous prime is 998843. The next prime is 998857. The reversal of 998850 is 58899.

It is an interprime number because it is at equal distance from previous prime (998843) and next prime (998857).

It is a Curzon number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 998799 and 998808.

It is not an unprimeable number, because it can be changed into a prime (998857) by changing a digit.

998850 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 11 ways as a sum of consecutive naturals, for example, 3180 + ... + 3479.

It is an arithmetic number, because the mean of its divisors is an integer number (103230).

2⁹⁹⁸⁸⁵⁰ is an apocalyptic number.

998850 is an abundant number, since it is smaller than the sum of its proper divisors (1478670).

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

998850 is a wasteful number, since it uses less digits than its factorization.

998850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674 (or 6669 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 998850 is about 999.4248345924. The cubic root of 998850 is about 99.9616519628.

The spelling of 998850 in words is "nine hundred ninety-eight thousand, eight hundred fifty".