998834 has 8 divisors (see below), whose sum is σ = 1508268. Its totient is φ = 496080.

The previous prime is 998831. The next prime is 998839. The reversal of 998834 is 438899.

It can be written as a sum of positive squares in 2 ways, for example, as 874225 + 124609 = 935^2 + 353^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 998791 and 998800.

It is not an unprimeable number, because it can be changed into a prime (998831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277 + ... + 1904.

2⁹⁹⁸⁸³⁴ is an apocalyptic number.

998834 is a deficient number, since it is larger than the sum of its proper divisors (509434).

998834 is a wasteful number, since it uses less digits than its factorization.

998834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340.

The product of its digits is 62208, while the sum is 41.

The square root of 998834 is about 999.4168299564. The cubic root of 998834 is about 99.9611182174.

The spelling of 998834 in words is "nine hundred ninety-eight thousand, eight hundred thirty-four".