998849 has 4 divisors (see below), whose sum is σ = 1051440. Its totient is φ = 946260.

The previous prime is 998843. The next prime is 998857. The reversal of 998849 is 948899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 998849 - 2¹⁶ = 933313 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998849.

It is not an unprimeable number, because it can be changed into a prime (998843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26267 + ... + 26304.

It is an arithmetic number, because the mean of its divisors is an integer number (262860).

2⁹⁹⁸⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

998849 is a deficient number, since it is larger than the sum of its proper divisors (52591).

998849 is a wasteful number, since it uses less digits than its factorization.

998849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52590.

The product of its digits is 186624, while the sum is 47.

The square root of 998849 is about 999.4243343045. The cubic root of 998849 is about 99.9616186039.

The spelling of 998849 in words is "nine hundred ninety-eight thousand, eight hundred forty-nine".