998199 has 12 divisors (see below), whose sum is σ = 1451736. Its totient is φ = 660912.

The previous prime is 998197. The next prime is 998201. The reversal of 998199 is 991899.

It is an interprime number because it is at equal distance from previous prime (998197) and next prime (998201).

It is not a de Polignac number, because 998199 - 2¹ = 998197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1492 + ... + 2054.

It is an arithmetic number, because the mean of its divisors is an integer number (120978).

2⁹⁹⁸¹⁹⁹ is an apocalyptic number.

998199 is a deficient number, since it is larger than the sum of its proper divisors (453537).

998199 is a wasteful number, since it uses less digits than its factorization.

998199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 763 counting only the distinct ones).

The product of its digits is 52488, while the sum is 45.

The square root of 998199 is about 999.0990941844. The cubic root of 998199 is about 99.9399305906.

The spelling of 998199 in words is "nine hundred ninety-eight thousand, one hundred ninety-nine".